| Andy Steward | Prime Generalized Repunits • Top 20 by Year | 31 December 2009 |
|---|
| Rank | Digits | GRU | Year | Proved By | Now |
|---|---|---|---|---|---|
| 1 | 5925 | Φ1801(1956) | 1994 | Harvey Dubner & Richard Brent | 142 |
| 2 | 4753 | Φ1801(437) | 1994 | Harvey Dubner & Richard Brent | 175 |
| 3 | 3469 | Φ1321(424) | 1994 | Harvey Dubner & Richard Brent | 258 |
| 4 | 2860 | Φ1009(686) | 1994 | Harvey Dubner & Richard Brent | 410 |
| 5 | 2154 | Φ1009(137) | 1994 | Harvey Dubner & Richard Brent | 668 |
| 6 | 2002 | Φ1297(35) | 1994 | Harvey Dubner & Richard Brent | 734 |
| 7 | 1993 | Φ4177(3) | 1994 | Harvey Dubner & Richard Brent | 736 |
| 8 | 1532 | Φ673(190) | 1994 | Harvey Dubner & Richard Brent | 902 |
| 9 | 1436 | Φ1699(7) | 1994 | Harvey Dubner & Richard Brent | 948 |
| 10 | 1403 | Φ761(70) | 1994 | Harvey Dubner & Richard Brent | 966 |
| 11 | 1372 | Φ769(61) | 1994 | Harvey Dubner & Richard Brent | 984 |
| 12 | 1356 | Φ757(62) | 1994 | Harvey Dubner & Richard Brent | 992 |
| 13 | 1350 | Φ673(102) | 1994 | Harvey Dubner & Richard Brent | 996 |
| 14 | 1237 | Φ577(140) | 1994 | Harvey Dubner & Richard Brent | 1043 |
| 15 | 1143 | Φ631(65) | 1994 | Harvey Dubner & Richard Brent | 1096 |
| 16 | 1137 | Φ1021(13) | 1994 | Harvey Dubner & Richard Brent | 1098 |
| 17 | 1122 | Φ661(50) | 1994 | Harvey Dubner & Richard Brent | 1105 |
| 18 | 1121 | Φ577(88) | 1994 | Harvey Dubner & Richard Brent | 1110 |
| 19 | 1108 | Φ397(627) | 1994 | Harvey Dubner & Richard Brent | 1120 |
| 20 | 1104 | Φ461(251) | 1994 | Harvey Dubner & Richard Brent | 1124 |
No new primes were proven this year.
No new primes were proven this year.
| Rank | Digits | GRU | Year | Proved By | Now |
|---|---|---|---|---|---|
| 1 | 5925 | Φ1801(1956) | 1994 | Harvey Dubner & Richard Brent | 142 |
| 2 | 4753 | Φ1801(437) | 1994 | Harvey Dubner & Richard Brent | 175 |
| 3 | 3469 | Φ1321(424) | 1994 | Harvey Dubner & Richard Brent | 258 |
| 4 | 2860 | Φ1009(686) | 1994 | Harvey Dubner & Richard Brent | 410 |
| 5 | 2269 | Φ971(218) | 1997 | Carlos Rivera | 626 |
| 6 | 2154 | Φ1009(137) | 1994 | Harvey Dubner & Richard Brent | 668 |
| 7 | 2002 | Φ1297(35) | 1994 | Harvey Dubner & Richard Brent | 734 |
| 8 | 1993 | Φ4177(3) | 1994 | Harvey Dubner & Richard Brent | 736 |
| 9 | 1909 | Φ829(202) | 1997 | Carlos Rivera | 772 |
| 10 | 1532 | Φ673(190) | 1994 | Harvey Dubner & Richard Brent | 902 |
| 11 | 1436 | Φ1699(7) | 1994 | Harvey Dubner & Richard Brent | 948 |
| 12 | 1403 | Φ761(70) | 1994 | Harvey Dubner & Richard Brent | 966 |
| 13 | 1372 | Φ769(61) | 1994 | Harvey Dubner & Richard Brent | 984 |
| 14 | 1356 | Φ757(62) | 1994 | Harvey Dubner & Richard Brent | 992 |
| 15 | 1350 | Φ673(102) | 1994 | Harvey Dubner & Richard Brent | 996 |
| 16 | 1237 | Φ577(140) | 1994 | Harvey Dubner & Richard Brent | 1043 |
| 17 | 1143 | Φ631(65) | 1994 | Harvey Dubner & Richard Brent | 1096 |
| 18 | 1137 | Φ1021(13) | 1994 | Harvey Dubner & Richard Brent | 1098 |
| 19 | 1122 | Φ661(50) | 1994 | Harvey Dubner & Richard Brent | 1105 |
| 20 | 1121 | Φ577(88) | 1994 | Harvey Dubner & Richard Brent | 1110 |
No new primes were proven this year.
No new primes were proven this year.
| Rank | Digits | GRU | Year | Proved By | Now |
|---|---|---|---|---|---|
| 1 | 6908 | Φ1801(6878) | 2000 | Andy Steward | 126 |
| 2 | 6563 | Φ2521(402) | 2000 | Pavlos Saridis & Conrad Curry | 133 |
| 3 | 6061 | Φ1621(5507) | 2000 | David Broadhurst | 141 |
| 4 | 5925 | Φ1801(1956) | 1994 | Harvey Dubner & Richard Brent | 142 |
| 5 | 5473 | Φ1621(2387) | 2000 | David Broadhurst | 148 |
| 6 | 5426 | Φ1873(791) | 2000 | Andy Steward | 152 |
| 7 | 5356 | Φ6883(6) | 2000 | Andy Steward | 154 |
| 8 | 4753 | Φ1801(437) | 1994 | Harvey Dubner & Richard Brent | 175 |
| 9 | 4450 | Φ1201(5102) | 2000 | Andy Steward | 194 |
| 10 | 4320 | Φ1153(5616) | 2000 | David Broadhurst | 199 |
| 11 | 4234 | Φ1153(4735) | 2000 | David Broadhurst | 204 |
| 12 | 3954 | Φ1321(989) | 2000 | Andy Steward | 224 |
| 13 | 3716 | Φ1009(4854) | 2000 | Andy Steward | 238 |
| 14 | 3663 | Φ1009(4298) | 2000 | Andy Steward | 241 |
| 15 | 3655 | Φ1009(4224) | 2000 | Andy Steward | 242 |
| 16 | 3605 | Φ1009(3762) | 2000 | Andy Steward | 248 |
| 17 | 3585 | Φ1009(3595) | 2000 | Andy Steward | 250 |
| 18 | 3538 | Φ1201(887) | 2000 | Andy Steward | 253 |
| 19 | 3469 | Φ1321(424) | 1994 | Harvey Dubner & Richard Brent | 258 |
| 20 | 3456 | Φ1153(999) | 2000 | David Broadhurst | 260 |
| Rank | Digits | GRU | Year | Proved By | Now |
|---|---|---|---|---|---|
| 1 | 13034 | Φ3361(7568) | 2001 | Andy Steward | 33 |
| 2 | 10746 | Φ3121(2781) | 2001 | Andy Steward | 53 |
| 3 | 10711 | Φ3061(3164) | 2001 | Andy Steward | 54 |
| 4 | 10619 | Φ2689(8917) | 2001 | Andy Steward | 58 |
| 5 | 10109 | Φ2521(10268) | 2001 | David Broadhurst & Bouk de Water | 65 |
| 6 | 10072 | Φ2521(9926) | 2001 | David Broadhurst & Sean Irvine | 67 |
| 7 | 9947 | Φ2521(8854) | 2001 | David Broadhurst | 69 |
| 8 | 9151 | Φ3061(978) | 2001 | Andy Steward | 80 |
| 9 | 8617 | Φ2161(9751) | 2001 | David Broadhurst | 88 |
| 10 | 8523 | Φ2521(2409) | 2001 | David Broadhurst & Sean Irvine | 91 |
| 11 | 8473 | Φ2521(2302) | 2001 | David Broadhurst | 92 |
| 12 | 8325 | Φ2161(7147) | 2001 | David Broadhurst | 96 |
| 13 | 8322 | Φ5581(31) | 2001 | David Broadhurst & Sean Irvine | 97 |
| 14 | 8113 | Φ2161(5701) | 2001 | David Broadhurst | 99 |
| 15 | 7927 | Φ2161(4676) | 2001 | David Broadhurst | 102 |
| 16 | 7873 | Φ2161(4411) | 2001 | David Broadhurst | 103 |
| 17 | 7710 | Φ2161(3709) | 2001 | David Broadhurst | 109 |
| 18 | 7431 | Φ2017(4850) | 2001 | David Broadhurst, Bouk de Water & Sean Irvine | 112 |
| 19 | 7388 | Φ2017(4616) | 2001 | David Broadhurst & Bouk de Water | 113 |
| 20 | 6996 | Φ1801(7698) | 2001 | David Broadhurst | 123 |
| Rank | Digits | GRU | Year | Proved By | Now |
|---|---|---|---|---|---|
| 1 | 17879 | Φ4201(18067) | 2002 | Andy Steward | 12 |
| 2 | 13034 | Φ3361(7568) | 2001 | Andy Steward | 33 |
| 3 | 12331 | Φ3061(10708) | 2002 | Andy Steward | 38 |
| 4 | 10871 | Φ3121(3048) | 2002 | David Broadhurst, Bouk de Water & Andy Steward | 52 |
| 5 | 10746 | Φ3121(2781) | 2001 | Andy Steward | 53 |
| 6 | 10711 | Φ3061(3164) | 2001 | Andy Steward | 54 |
| 7 | 10619 | Φ2689(8917) | 2001 | Andy Steward | 58 |
| 8 | 10109 | Φ2521(10268) | 2001 | David Broadhurst & Bouk de Water | 65 |
| 9 | 10072 | Φ2521(9926) | 2001 | David Broadhurst & Sean Irvine | 67 |
| 10 | 9947 | Φ2521(8854) | 2001 | David Broadhurst | 69 |
| 11 | 9151 | Φ3061(978) | 2001 | Andy Steward | 80 |
| 12 | 8836 | Φ2341(5968) | 2002 | Andy Steward | 87 |
| 13 | 8617 | Φ2161(9751) | 2001 | David Broadhurst | 88 |
| 14 | 8523 | Φ2521(2409) | 2001 | David Broadhurst & Sean Irvine | 91 |
| 15 | 8473 | Φ2521(2302) | 2001 | David Broadhurst | 92 |
| 16 | 8325 | Φ2161(7147) | 2001 | David Broadhurst | 96 |
| 17 | 8322 | Φ5581(31) | 2001 | David Broadhurst & Sean Irvine | 97 |
| 18 | 8113 | Φ2161(5701) | 2001 | David Broadhurst | 99 |
| 19 | 7927 | Φ2161(4676) | 2001 | David Broadhurst | 102 |
| 20 | 7873 | Φ2161(4411) | 2001 | David Broadhurst | 103 |
| Rank | Digits | GRU | Year | Proved By | Now |
|---|---|---|---|---|---|
| 1 | 17879 | Φ4201(18067) | 2002 | Andy Steward | 12 |
| 2 | 14676 | Φ3499(15679) | 2003 | David Broadhurst & Bouk de Water | 22 |
| 3 | 14369 | Φ3673(8185) | 2003 | Andy Steward | 24 |
| 4 | 13512 | Φ3301(12432) | 2003 | Andy Steward | 28 |
| 5 | 13034 | Φ3361(7568) | 2001 | Andy Steward | 33 |
| 6 | 12331 | Φ3061(10708) | 2002 | Andy Steward | 38 |
| 7 | 10871 | Φ3121(3048) | 2002 | David Broadhurst, Bouk de Water & Andy Steward | 52 |
| 8 | 10746 | Φ3121(2781) | 2001 | Andy Steward | 53 |
| 9 | 10711 | Φ3061(3164) | 2001 | Andy Steward | 54 |
| 10 | 10631 | Φ2857(5273) | 2003 | Andy Steward | 57 |
| 11 | 10619 | Φ2689(8917) | 2001 | Andy Steward | 58 |
| 12 | 10109 | Φ2521(10268) | 2001 | David Broadhurst & Bouk de Water | 65 |
| 13 | 10105 | Φ2647(6588) | 2003 | David Broadhurst & Bouk de Water | 66 |
| 14 | 10072 | Φ2521(9926) | 2001 | David Broadhurst & Sean Irvine | 67 |
| 15 | 10043 | Φ2857(3284) | 2003 | Andy Steward | 68 |
| 16 | 9947 | Φ2521(8854) | 2001 | David Broadhurst | 69 |
| 17 | 9151 | Φ3061(978) | 2001 | Andy Steward | 80 |
| 18 | 8836 | Φ2341(5968) | 2002 | Andy Steward | 87 |
| 19 | 8617 | Φ2161(9751) | 2001 | David Broadhurst | 88 |
| 20 | 8523 | Φ2521(2409) | 2001 | David Broadhurst & Sean Irvine | 91 |
| Rank | Digits | GRU | Year | Proved By | Now |
|---|---|---|---|---|---|
| 1 | 17879 | Φ4201(18067) | 2002 | Andy Steward | 12 |
| 2 | 14676 | Φ3499(15679) | 2003 | David Broadhurst & Bouk de Water | 22 |
| 3 | 14369 | Φ3673(8185) | 2003 | Andy Steward | 24 |
| 4 | 13512 | Φ3301(12432) | 2003 | Andy Steward | 28 |
| 5 | 13034 | Φ3361(7568) | 2001 | Andy Steward | 33 |
| 6 | 12331 | Φ3061(10708) | 2002 | Andy Steward | 38 |
| 7 | 10871 | Φ3121(3048) | 2002 | David Broadhurst, Bouk de Water & Andy Steward | 52 |
| 8 | 10746 | Φ3121(2781) | 2001 | Andy Steward | 53 |
| 9 | 10711 | Φ3061(3164) | 2001 | Andy Steward | 54 |
| 10 | 10631 | Φ2857(5273) | 2003 | Andy Steward | 57 |
| 11 | 10619 | Φ2689(8917) | 2001 | Andy Steward | 58 |
| 12 | 10109 | Φ2521(10268) | 2001 | David Broadhurst & Bouk de Water | 65 |
| 13 | 10105 | Φ2647(6588) | 2003 | David Broadhurst & Bouk de Water | 66 |
| 14 | 10072 | Φ2521(9926) | 2001 | David Broadhurst & Sean Irvine | 67 |
| 15 | 10043 | Φ2857(3284) | 2003 | Andy Steward | 68 |
| 16 | 9947 | Φ2521(8854) | 2001 | David Broadhurst | 69 |
| 17 | 9151 | Φ3061(978) | 2001 | Andy Steward | 80 |
| 18 | 8836 | Φ2341(5968) | 2002 | Andy Steward | 87 |
| 19 | 8617 | Φ2161(9751) | 2001 | David Broadhurst | 88 |
| 20 | 8523 | Φ2521(2409) | 2001 | David Broadhurst & Sean Irvine | 91 |
| Rank | Digits | GRU | Year | Proved By | Now |
|---|---|---|---|---|---|
| 1 | 23058 | Φ6121(5855) | 2005 | Predrag Minovic & Larry Soule | 7 |
| 2 | 19000 | Φ4591(13782) | 2005 | Andy Steward | 10 |
| 3 | 17879 | Φ4201(18067) | 2002 | Andy Steward | 12 |
| 4 | 16980 | Φ4621(4735) | 2005 | David Broadhurst & Bouk de Water | 14 |
| 5 | 16882 | Φ4177(11031) | 2005 | David Broadhurst & Bouk de Water | 15 |
| 6 | 14676 | Φ3499(15679) | 2003 | David Broadhurst & Bouk de Water | 22 |
| 7 | 14534 | Φ4231(2728) | 2005 | Andy Steward | 23 |
| 8 | 14369 | Φ3673(8185) | 2003 | Andy Steward | 24 |
| 9 | 13512 | Φ3301(12432) | 2003 | Andy Steward | 28 |
| 10 | 13461 | Φ3319(11398) | 2005 | Andy Steward | 29 |
| 11 | 13263 | Φ3821(2963) | 2005 | Tom Wu | 30 |
| 12 | 13258 | Φ3697(3863) | 2005 | Andy Steward | 31 |
| 13 | 13034 | Φ3361(7568) | 2001 | Andy Steward | 33 |
| 14 | 12919 | Φ3877(2153) | 2005 | Tom Wu | 34 |
| 15 | 12610 | Φ4177(1046) | 2005 | David Broadhurst & Bouk de Water | 37 |
| 16 | 12331 | Φ3061(10708) | 2002 | Andy Steward | 38 |
| 17 | 12302 | Φ4363(661) | 2005 | Tom Wu | 39 |
| 18 | 11955 | Φ3037(8662) | 2005 | Andy Steward | 41 |
| 19 | 11886 | Φ3257(4469) | 2005 | Andy Steward | 42 |
| 20 | 11748 | Φ3187(4867) | 2005 | David Broadhurst & Bouk de Water | 43 |
| Rank | Digits | GRU | Year | Proved By | Now |
|---|---|---|---|---|---|
| 1 | 37090 | Φ8317(28839) | 2006 | Andy Steward | 1 |
| 2 | 23058 | Φ6121(5855) | 2005 | Predrag Minovic & Larry Soule | 7 |
| 3 | 19000 | Φ4591(13782) | 2005 | Andy Steward | 10 |
| 4 | 17879 | Φ4201(18067) | 2002 | Andy Steward | 12 |
| 5 | 16980 | Φ4621(4735) | 2005 | David Broadhurst & Bouk de Water | 14 |
| 6 | 16882 | Φ4177(11031) | 2005 | David Broadhurst & Bouk de Water | 15 |
| 7 | 14676 | Φ3499(15679) | 2003 | David Broadhurst & Bouk de Water | 22 |
| 8 | 14534 | Φ4231(2728) | 2005 | Andy Steward | 23 |
| 9 | 14369 | Φ3673(8185) | 2003 | Andy Steward | 24 |
| 10 | 13512 | Φ3301(12432) | 2003 | Andy Steward | 28 |
| 11 | 13461 | Φ3319(11398) | 2005 | Andy Steward | 29 |
| 12 | 13263 | Φ3821(2963) | 2005 | Tom Wu | 30 |
| 13 | 13258 | Φ3697(3863) | 2005 | Andy Steward | 31 |
| 14 | 13034 | Φ3361(7568) | 2001 | Andy Steward | 33 |
| 15 | 12919 | Φ3877(2153) | 2005 | Tom Wu | 34 |
| 16 | 12782 | Φ4801(460) | 2006 | Alex Kruppa, Predrag Minovic & Larry Soule | 35 |
| 17 | 12610 | Φ4177(1046) | 2005 | David Broadhurst & Bouk de Water | 37 |
| 18 | 12331 | Φ3061(10708) | 2002 | Andy Steward | 38 |
| 19 | 12302 | Φ4363(661) | 2005 | Tom Wu | 39 |
| 20 | 11955 | Φ3037(8662) | 2005 | Andy Steward | 41 |
| Rank | Digits | GRU | Year | Proved By | Now |
|---|---|---|---|---|---|
| 1 | 37090 | Φ8317(28839) | 2006 | Andy Steward | 1 |
| 2 | 24506 | Φ5953(13096) | 2007 | Andy Steward | 4 |
| 3 | 23058 | Φ6121(5855) | 2005 | Predrag Minovic & Larry Soule | 7 |
| 4 | 19367 | Φ4663(14261) | 2007 | Andy Steward | 9 |
| 5 | 19000 | Φ4591(13782) | 2005 | Andy Steward | 10 |
| 6 | 18925 | Φ4513(15637) | 2007 | Andy Steward | 11 |
| 7 | 17879 | Φ4201(18067) | 2002 | Andy Steward | 12 |
| 8 | 16980 | Φ4621(4735) | 2005 | David Broadhurst & Bouk de Water | 14 |
| 9 | 16882 | Φ4177(11031) | 2005 | David Broadhurst & Bouk de Water | 15 |
| 10 | 15450 | Φ3697(15134) | 2007 | Andy Steward | 18 |
| 11 | 15038 | Φ3889(7372) | 2007 | Andy Steward | 21 |
| 12 | 14676 | Φ3499(15679) | 2003 | David Broadhurst & Bouk de Water | 22 |
| 13 | 14534 | Φ4231(2728) | 2005 | Andy Steward | 23 |
| 14 | 14369 | Φ3673(8185) | 2003 | Andy Steward | 24 |
| 15 | 13512 | Φ3301(12432) | 2003 | Andy Steward | 28 |
| 16 | 13461 | Φ3319(11398) | 2005 | Andy Steward | 29 |
| 17 | 13263 | Φ3821(2963) | 2005 | Tom Wu | 30 |
| 18 | 13258 | Φ3697(3863) | 2005 | Andy Steward | 31 |
| 19 | 13034 | Φ3361(7568) | 2001 | Andy Steward | 33 |
| 20 | 12919 | Φ3877(2153) | 2005 | Tom Wu | 34 |
| Rank | Digits | GRU | Year | Proved By | Now |
|---|---|---|---|---|---|
| 1 | 37090 | Φ8317(28839) | 2006 | Andy Steward | 1 |
| 2 | 24506 | Φ5953(13096) | 2007 | Andy Steward | 4 |
| 3 | 23333 | Φ5347(23151) | 2008 | Andy Steward | 6 |
| 4 | 23058 | Φ6121(5855) | 2005 | Predrag Minovic & Larry Soule | 7 |
| 5 | 19367 | Φ4663(14261) | 2007 | Andy Steward | 9 |
| 6 | 19000 | Φ4591(13782) | 2005 | Andy Steward | 10 |
| 7 | 18925 | Φ4513(15637) | 2007 | Andy Steward | 11 |
| 8 | 17879 | Φ4201(18067) | 2002 | Andy Steward | 12 |
| 9 | 17332 | Φ4051(19026) | 2008 | Andy Steward | 13 |
| 10 | 16980 | Φ4621(4735) | 2005 | David Broadhurst & Bouk de Water | 14 |
| 11 | 16882 | Φ4177(11031) | 2005 | David Broadhurst & Bouk de Water | 15 |
| 12 | 15450 | Φ3697(15134) | 2007 | Andy Steward | 18 |
| 13 | 15219 | Φ3613(16339) | 2008 | Andy Steward | 19 |
| 14 | 15051 | Φ4177(4018) | 2008 | Andy Steward | 20 |
| 15 | 15038 | Φ3889(7372) | 2007 | Andy Steward | 21 |
| 16 | 14676 | Φ3499(15679) | 2003 | David Broadhurst & Bouk de Water | 22 |
| 17 | 14534 | Φ4231(2728) | 2005 | Andy Steward | 23 |
| 18 | 14369 | Φ3673(8185) | 2003 | Andy Steward | 24 |
| 19 | 14240 | Φ3967(3894) | 2008 | Andy Steward | 25 |
| 20 | 14202 | Φ3433(13735) | 2008 | Andy Steward | 26 |
| Rank | Digits | GRU | Year | Proved By | Now |
|---|---|---|---|---|---|
| 1 | 37090 | Φ8317(28839) | 2006 | Andy Steward | 1 |
| 2 | 30056 | Φ7411(11379) | 2009 | Andy Steward | 2 |
| 3 | 26684 | Φ7549(3429) | 2009 | Andy Steward | 3 |
| 4 | 24506 | Φ5953(13096) | 2007 | Andy Steward | 4 |
| 5 | 23335 | Φ11971(89) | 2009 | Tom Wu | 5 |
| 6 | 23333 | Φ5347(23151) | 2008 | Andy Steward | 6 |
| 7 | 23058 | Φ6121(5855) | 2005 | Predrag Minovic & Larry Soule | 7 |
| 8 | 19756 | Φ4969(9473) | 2009 | Tom Wu | 8 |
| 9 | 19367 | Φ4663(14261) | 2007 | Andy Steward | 9 |
| 10 | 19000 | Φ4591(13782) | 2005 | Andy Steward | 10 |
| 11 | 18925 | Φ4513(15637) | 2007 | Andy Steward | 11 |
| 12 | 17879 | Φ4201(18067) | 2002 | Andy Steward | 12 |
| 13 | 17332 | Φ4051(19026) | 2008 | Andy Steward | 13 |
| 14 | 16980 | Φ4621(4735) | 2005 | David Broadhurst & Bouk de Water | 14 |
| 15 | 16882 | Φ4177(11031) | 2005 | David Broadhurst & Bouk de Water | 15 |
| 16 | 15545 | Φ4201(5024) | 2009 | Andy Steward | 16 |
| 17 | 15539 | Φ5483(683) | 2009 | Andy Steward | 17 |
| 18 | 15450 | Φ3697(15134) | 2007 | Andy Steward | 18 |
| 19 | 15219 | Φ3613(16339) | 2008 | Andy Steward | 19 |
| 20 | 15051 | Φ4177(4018) | 2008 | Andy Steward | 20 |