Andy Steward

Prime Generalized Repunits • Top 20 by Year

15 March 2010

1994

RankDigitsGRUYearProved ByNow
1 5925 Φ1801(1956) 1994 Harvey Dubner & Richard Brent 162
2 4753 Φ1801(437) 1994 Harvey Dubner & Richard Brent 198
3 3469 Φ1321(424) 1994 Harvey Dubner & Richard Brent 290
4 2860 Φ1009(686) 1994 Harvey Dubner & Richard Brent 466
5 2154 Φ1009(137) 1994 Harvey Dubner & Richard Brent 724
6 2002 Φ1297(35) 1994 Harvey Dubner & Richard Brent 790
7 1993 Φ4177(3) 1994 Harvey Dubner & Richard Brent 792
8 1532 Φ673(190) 1994 Harvey Dubner & Richard Brent 958
9 1436 Φ1699(7) 1994 Harvey Dubner & Richard Brent 1004
10 1403 Φ761(70) 1994 Harvey Dubner & Richard Brent 1022
11 1372 Φ769(61) 1994 Harvey Dubner & Richard Brent 1040
12 1356 Φ757(62) 1994 Harvey Dubner & Richard Brent 1048
13 1350 Φ673(102) 1994 Harvey Dubner & Richard Brent 1052
14 1237 Φ577(140) 1994 Harvey Dubner & Richard Brent 1099
15 1143 Φ631(65) 1994 Harvey Dubner & Richard Brent 1152
16 1137 Φ1021(13) 1994 Harvey Dubner & Richard Brent 1154
17 1122 Φ661(50) 1994 Harvey Dubner & Richard Brent 1161
18 1121 Φ577(88) 1994 Harvey Dubner & Richard Brent 1166
19 1108 Φ397(627) 1994 Harvey Dubner & Richard Brent 1176
20 1104 Φ461(251) 1994 Harvey Dubner & Richard Brent 1180

1995

No new Top-20 primes were proven this year.

1996

No new Top-20 primes were proven this year.

1997

RankDigitsGRUYearProved ByNow
1 5925 Φ1801(1956) 1994 Harvey Dubner & Richard Brent 162
2 4753 Φ1801(437) 1994 Harvey Dubner & Richard Brent 198
3 3469 Φ1321(424) 1994 Harvey Dubner & Richard Brent 290
4 2860 Φ1009(686) 1994 Harvey Dubner & Richard Brent 466
5 2269 Φ971(218) 1997 Carlos Rivera 682
6 2154 Φ1009(137) 1994 Harvey Dubner & Richard Brent 724
7 2002 Φ1297(35) 1994 Harvey Dubner & Richard Brent 790
8 1993 Φ4177(3) 1994 Harvey Dubner & Richard Brent 792
9 1909 Φ829(202) 1997 Carlos Rivera 828
10 1532 Φ673(190) 1994 Harvey Dubner & Richard Brent 958
11 1436 Φ1699(7) 1994 Harvey Dubner & Richard Brent 1004
12 1403 Φ761(70) 1994 Harvey Dubner & Richard Brent 1022
13 1372 Φ769(61) 1994 Harvey Dubner & Richard Brent 1040
14 1356 Φ757(62) 1994 Harvey Dubner & Richard Brent 1048
15 1350 Φ673(102) 1994 Harvey Dubner & Richard Brent 1052
16 1237 Φ577(140) 1994 Harvey Dubner & Richard Brent 1099
17 1143 Φ631(65) 1994 Harvey Dubner & Richard Brent 1152
18 1137 Φ1021(13) 1994 Harvey Dubner & Richard Brent 1154
19 1122 Φ661(50) 1994 Harvey Dubner & Richard Brent 1161
20 1121 Φ577(88) 1994 Harvey Dubner & Richard Brent 1166

1998

No new Top-20 primes were proven this year.

1999

No new Top-20 primes were proven this year.

2000

RankDigitsGRUYearProved ByNow
1 6908 Φ1801(6878) 2000 Andy Steward 142
2 6563 Φ2521(402) 2000 Pavlos Saridis & Conrad Curry 149
3 6061 Φ1621(5507) 2000 David Broadhurst 160
4 5925 Φ1801(1956) 1994 Harvey Dubner & Richard Brent 162
5 5473 Φ1621(2387) 2000 David Broadhurst 168
6 5426 Φ1873(791) 2000 Andy Steward 172
7 5356 Φ6883(6) 2000 Andy Steward 175
8 4753 Φ1801(437) 1994 Harvey Dubner & Richard Brent 198
9 4450 Φ1201(5102) 2000 Andy Steward 217
10 4320 Φ1153(5616) 2000 David Broadhurst 222
11 4234 Φ1153(4735) 2000 David Broadhurst 229
12 3954 Φ1321(989) 2000 Andy Steward 252
13 3716 Φ1009(4854) 2000 Andy Steward 267
14 3663 Φ1009(4298) 2000 Andy Steward 270
15 3655 Φ1009(4224) 2000 Andy Steward 271
16 3605 Φ1009(3762) 2000 Andy Steward 278
17 3585 Φ1009(3595) 2000 Andy Steward 281
18 3538 Φ1201(887) 2000 Andy Steward 284
19 3469 Φ1321(424) 1994 Harvey Dubner & Richard Brent 290
20 3456 Φ1153(999) 2000 David Broadhurst 292

2001

RankDigitsGRUYearProved ByNow
1 13034 Φ3361(7568) 2001 Andy Steward 38
2 10746 Φ3121(2781) 2001 Andy Steward 59
3 10711 Φ3061(3164) 2001 Andy Steward 60
4 10619 Φ2689(8917) 2001 Andy Steward 64
5 10109 Φ2521(10268) 2001 David Broadhurst & Bouk de Water 72
6 10072 Φ2521(9926) 2001 David Broadhurst & Sean Irvine 74
7 9947 Φ2521(8854) 2001 David Broadhurst 77
8 9151 Φ3061(978) 2001 Andy Steward 92
9 8617 Φ2161(9751) 2001 David Broadhurst 100
10 8523 Φ2521(2409) 2001 David Broadhurst & Sean Irvine 104
11 8473 Φ2521(2302) 2001 David Broadhurst 105
12 8325 Φ2161(7147) 2001 David Broadhurst 109
13 8322 Φ5581(31) 2001 David Broadhurst & Sean Irvine 110
14 8113 Φ2161(5701) 2001 David Broadhurst 112
15 7927 Φ2161(4676) 2001 David Broadhurst 117
16 7873 Φ2161(4411) 2001 David Broadhurst 118
17 7710 Φ2161(3709) 2001 David Broadhurst 124
18 7431 Φ2017(4850) 2001 David Broadhurst, Bouk de Water & Sean Irvine 128
19 7388 Φ2017(4616) 2001 David Broadhurst & Bouk de Water 129
20 6996 Φ1801(7698) 2001 David Broadhurst 139

2002

RankDigitsGRUYearProved ByNow
1 17879 Φ4201(18067) 2002 Andy Steward 12
2 13034 Φ3361(7568) 2001 Andy Steward 38
3 12331 Φ3061(10708) 2002 Andy Steward 44
4 10871 Φ3121(3048) 2002 David Broadhurst, Bouk de Water & Andy Steward 58
5 10746 Φ3121(2781) 2001 Andy Steward 59
6 10711 Φ3061(3164) 2001 Andy Steward 60
7 10619 Φ2689(8917) 2001 Andy Steward 64
8 10109 Φ2521(10268) 2001 David Broadhurst & Bouk de Water 72
9 10072 Φ2521(9926) 2001 David Broadhurst & Sean Irvine 74
10 9947 Φ2521(8854) 2001 David Broadhurst 77
11 9151 Φ3061(978) 2001 Andy Steward 92
12 8836 Φ2341(5968) 2002 Andy Steward 99
13 8617 Φ2161(9751) 2001 David Broadhurst 100
14 8523 Φ2521(2409) 2001 David Broadhurst & Sean Irvine 104
15 8473 Φ2521(2302) 2001 David Broadhurst 105
16 8325 Φ2161(7147) 2001 David Broadhurst 109
17 8322 Φ5581(31) 2001 David Broadhurst & Sean Irvine 110
18 8113 Φ2161(5701) 2001 David Broadhurst 112
19 7927 Φ2161(4676) 2001 David Broadhurst 117
20 7873 Φ2161(4411) 2001 David Broadhurst 118

2003

RankDigitsGRUYearProved ByNow
1 17879 Φ4201(18067) 2002 Andy Steward 12
2 14676 Φ3499(15679) 2003 David Broadhurst & Bouk de Water 26
3 14369 Φ3673(8185) 2003 Andy Steward 28
4 13512 Φ3301(12432) 2003 Andy Steward 33
5 13034 Φ3361(7568) 2001 Andy Steward 38
6 12331 Φ3061(10708) 2002 Andy Steward 44
7 10871 Φ3121(3048) 2002 David Broadhurst, Bouk de Water & Andy Steward 58
8 10746 Φ3121(2781) 2001 Andy Steward 59
9 10711 Φ3061(3164) 2001 Andy Steward 60
10 10631 Φ2857(5273) 2003 Andy Steward 63
11 10619 Φ2689(8917) 2001 Andy Steward 64
12 10109 Φ2521(10268) 2001 David Broadhurst & Bouk de Water 72
13 10105 Φ2647(6588) 2003 David Broadhurst & Bouk de Water 73
14 10072 Φ2521(9926) 2001 David Broadhurst & Sean Irvine 74
15 10043 Φ2857(3284) 2003 Andy Steward 75
16 9947 Φ2521(8854) 2001 David Broadhurst 77
17 9151 Φ3061(978) 2001 Andy Steward 92
18 8836 Φ2341(5968) 2002 Andy Steward 99
19 8617 Φ2161(9751) 2001 David Broadhurst 100
20 8523 Φ2521(2409) 2001 David Broadhurst & Sean Irvine 104

2004

No new Top-20 primes were proven this year.

2005

RankDigitsGRUYearProved ByNow
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 15
5 16882 Φ4177(11031) 2005 David Broadhurst & Bouk de Water 16
6 14676 Φ3499(15679) 2003 David Broadhurst & Bouk de Water 26
7 14534 Φ4231(2728) 2005 Andy Steward 27
8 14369 Φ3673(8185) 2003 Andy Steward 28
9 13512 Φ3301(12432) 2003 Andy Steward 33
10 13461 Φ3319(11398) 2005 Andy Steward 34
11 13263 Φ3821(2963) 2005 Tom Wu 35
12 13258 Φ3697(3863) 2005 Andy Steward 36
13 13034 Φ3361(7568) 2001 Andy Steward 38
14 12919 Φ3877(2153) 2005 Tom Wu 39
15 12610 Φ4177(1046) 2005 David Broadhurst & Bouk de Water 42
16 12331 Φ3061(10708) 2002 Andy Steward 44
17 12302 Φ4363(661) 2005 Tom Wu 45
18 11955 Φ3037(8662) 2005 Andy Steward 47
19 11886 Φ3257(4469) 2005 Andy Steward 48
20 11748 Φ3187(4867) 2005 David Broadhurst & Bouk de Water 49

2006

RankDigitsGRUYearProved ByNow
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 15
6 16882 Φ4177(11031) 2005 David Broadhurst & Bouk de Water 16
7 14676 Φ3499(15679) 2003 David Broadhurst & Bouk de Water 26
8 14534 Φ4231(2728) 2005 Andy Steward 27
9 14369 Φ3673(8185) 2003 Andy Steward 28
10 13512 Φ3301(12432) 2003 Andy Steward 33
11 13461 Φ3319(11398) 2005 Andy Steward 34
12 13263 Φ3821(2963) 2005 Tom Wu 35
13 13258 Φ3697(3863) 2005 Andy Steward 36
14 13034 Φ3361(7568) 2001 Andy Steward 38
15 12919 Φ3877(2153) 2005 Tom Wu 39
16 12782 Φ4801(460) 2006 Alex Kruppa, Predrag Minovic & Larry Soule 40
17 12610 Φ4177(1046) 2005 David Broadhurst & Bouk de Water 42
18 12331 Φ3061(10708) 2002 Andy Steward 44
19 12302 Φ4363(661) 2005 Tom Wu 45
20 11955 Φ3037(8662) 2005 Andy Steward 47

2007

RankDigitsGRUYearProved ByNow
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 15
9 16882 Φ4177(11031) 2005 David Broadhurst & Bouk de Water 16
10 15450 Φ3697(15134) 2007 Andy Steward 21
11 15038 Φ3889(7372) 2007 Andy Steward 25
12 14676 Φ3499(15679) 2003 David Broadhurst & Bouk de Water 26
13 14534 Φ4231(2728) 2005 Andy Steward 27
14 14369 Φ3673(8185) 2003 Andy Steward 28
15 13512 Φ3301(12432) 2003 Andy Steward 33
16 13461 Φ3319(11398) 2005 Andy Steward 34
17 13263 Φ3821(2963) 2005 Tom Wu 35
18 13258 Φ3697(3863) 2005 Andy Steward 36
19 13034 Φ3361(7568) 2001 Andy Steward 38
20 12919 Φ3877(2153) 2005 Tom Wu 39

2008

RankDigitsGRUYearProved ByNow
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 14
10 16980 Φ4621(4735) 2005 David Broadhurst & Bouk de Water 15
11 16882 Φ4177(11031) 2005 David Broadhurst & Bouk de Water 16
12 15450 Φ3697(15134) 2007 Andy Steward 21
13 15219 Φ3613(16339) 2008 Andy Steward 23
14 15051 Φ4177(4018) 2008 Andy Steward 24
15 15038 Φ3889(7372) 2007 Andy Steward 25
16 14676 Φ3499(15679) 2003 David Broadhurst & Bouk de Water 26
17 14534 Φ4231(2728) 2005 Andy Steward 27
18 14369 Φ3673(8185) 2003 Andy Steward 28
19 14240 Φ3967(3894) 2008 Andy Steward 29
20 14202 Φ3433(13735) 2008 Andy Steward 30

2009

RankDigitsGRUYearProved ByNow
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 14
14 16980 Φ4621(4735) 2005 David Broadhurst & Bouk de Water 15
15 16882 Φ4177(11031) 2005 David Broadhurst & Bouk de Water 16
16 15545 Φ4201(5024) 2009 Andy Steward 18
17 15539 Φ5483(683) 2009 Andy Steward 19
18 15450 Φ3697(15134) 2007 Andy Steward 21
19 15219 Φ3613(16339) 2008 Andy Steward 23
20 15051 Φ4177(4018) 2008 Andy Steward 24

2010

RankDigitsGRUYearProved ByNow
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 17648 Φ4099(20250) 2010 Andy Steward 13
14 17332 Φ4051(19026) 2008 Andy Steward 14
15 16980 Φ4621(4735) 2005 David Broadhurst & Bouk de Water 15
16 16882 Φ4177(11031) 2005 David Broadhurst & Bouk de Water 16
17 16170 Φ3793(18371) 2010 Andy Steward 17
18 15545 Φ4201(5024) 2009 Andy Steward 18
19 15539 Φ5483(683) 2009 Andy Steward 19
20 15484 Φ4051(6655) 2010 Andy Steward 20