Andy Steward

Prime Generalized Repunits • Top 20 by Year

20 March 2011

1994

RankDigitsGRUYearProved ByNow
1 5925 Φ1801(1956) 1994 Harvey Dubner & Richard Brent 180
2 4753 Φ1801(437) 1994 Harvey Dubner & Richard Brent 220
3 3469 Φ1321(424) 1994 Harvey Dubner & Richard Brent 326
4 2860 Φ1009(686) 1994 Harvey Dubner & Richard Brent 525
5 2154 Φ1009(137) 1994 Harvey Dubner & Richard Brent 783
6 2002 Φ1297(35) 1994 Harvey Dubner & Richard Brent 849
7 1993 Φ4177(3) 1994 Harvey Dubner & Richard Brent 851
8 1532 Φ673(190) 1994 Harvey Dubner & Richard Brent 1017
9 1436 Φ1699(7) 1994 Harvey Dubner & Richard Brent 1063
10 1403 Φ761(70) 1994 Harvey Dubner & Richard Brent 1081
11 1372 Φ769(61) 1994 Harvey Dubner & Richard Brent 1099
12 1356 Φ757(62) 1994 Harvey Dubner & Richard Brent 1107
13 1350 Φ673(102) 1994 Harvey Dubner & Richard Brent 1111
14 1237 Φ577(140) 1994 Harvey Dubner & Richard Brent 1158
15 1143 Φ631(65) 1994 Harvey Dubner & Richard Brent 1211
16 1137 Φ1021(13) 1994 Harvey Dubner & Richard Brent 1213
17 1122 Φ661(50) 1994 Harvey Dubner & Richard Brent 1220
18 1121 Φ577(88) 1994 Harvey Dubner & Richard Brent 1225
19 1108 Φ397(627) 1994 Harvey Dubner & Richard Brent 1235
20 1104 Φ461(251) 1994 Harvey Dubner & Richard Brent 1239

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 180
2 4753 Φ1801(437) 1994 Harvey Dubner & Richard Brent 220
3 3469 Φ1321(424) 1994 Harvey Dubner & Richard Brent 326
4 2860 Φ1009(686) 1994 Harvey Dubner & Richard Brent 525
5 2269 Φ971(218) 1997 Carlos Rivera 741
6 2154 Φ1009(137) 1994 Harvey Dubner & Richard Brent 783
7 2002 Φ1297(35) 1994 Harvey Dubner & Richard Brent 849
8 1993 Φ4177(3) 1994 Harvey Dubner & Richard Brent 851
9 1909 Φ829(202) 1997 Carlos Rivera 887
10 1532 Φ673(190) 1994 Harvey Dubner & Richard Brent 1017
11 1436 Φ1699(7) 1994 Harvey Dubner & Richard Brent 1063
12 1403 Φ761(70) 1994 Harvey Dubner & Richard Brent 1081
13 1372 Φ769(61) 1994 Harvey Dubner & Richard Brent 1099
14 1356 Φ757(62) 1994 Harvey Dubner & Richard Brent 1107
15 1350 Φ673(102) 1994 Harvey Dubner & Richard Brent 1111
16 1237 Φ577(140) 1994 Harvey Dubner & Richard Brent 1158
17 1143 Φ631(65) 1994 Harvey Dubner & Richard Brent 1211
18 1137 Φ1021(13) 1994 Harvey Dubner & Richard Brent 1213
19 1122 Φ661(50) 1994 Harvey Dubner & Richard Brent 1220
20 1121 Φ577(88) 1994 Harvey Dubner & Richard Brent 1225

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 158
2 6563 Φ2521(402) 2000 Pavlos Saridis & Conrad Curry 166
3 6061 Φ1621(5507) 2000 David Broadhurst 178
4 5925 Φ1801(1956) 1994 Harvey Dubner & Richard Brent 180
5 5473 Φ1621(2387) 2000 David Broadhurst 188
6 5426 Φ1873(791) 2000 Andy Steward 192
7 5356 Φ6883(6) 2000 Andy Steward 195
8 4753 Φ1801(437) 1994 Harvey Dubner & Richard Brent 220
9 4450 Φ1201(5102) 2000 Andy Steward 241
10 4320 Φ1153(5616) 2000 David Broadhurst 247
11 4234 Φ1153(4735) 2000 David Broadhurst 254
12 3954 Φ1321(989) 2000 Andy Steward 279
13 3716 Φ1009(4854) 2000 Andy Steward 294
14 3663 Φ1009(4298) 2000 Andy Steward 297
15 3655 Φ1009(4224) 2000 Andy Steward 298
16 3605 Φ1009(3762) 2000 Andy Steward 305
17 3585 Φ1009(3595) 2000 Andy Steward 308
18 3538 Φ1201(887) 2000 Andy Steward 311
19 3469 Φ1321(424) 1994 Harvey Dubner & Richard Brent 326
20 3456 Φ1153(999) 2000 David Broadhurst 333

2001

RankDigitsGRUYearProved ByNow
1 13034 Φ3361(7568) 2001 Andy Steward 47
2 10746 Φ3121(2781) 2001 Andy Steward 70
3 10711 Φ3061(3164) 2001 Andy Steward 71
4 10619 Φ2689(8917) 2001 Andy Steward 75
5 10109 Φ2521(10268) 2001 David Broadhurst & Bouk de Water 83
6 10072 Φ2521(9926) 2001 David Broadhurst & Sean Irvine 85
7 9947 Φ2521(8854) 2001 David Broadhurst 88
8 9151 Φ3061(978) 2001 Andy Steward 105
9 8617 Φ2161(9751) 2001 David Broadhurst 114
10 8523 Φ2521(2409) 2001 David Broadhurst & Sean Irvine 118
11 8473 Φ2521(2302) 2001 David Broadhurst 119
12 8325 Φ2161(7147) 2001 David Broadhurst 123
13 8322 Φ5581(31) 2001 David Broadhurst & Sean Irvine 124
14 8113 Φ2161(5701) 2001 David Broadhurst 127
15 7927 Φ2161(4676) 2001 David Broadhurst 132
16 7873 Φ2161(4411) 2001 David Broadhurst 133
17 7710 Φ2161(3709) 2001 David Broadhurst 139
18 7431 Φ2017(4850) 2001 David Broadhurst, Bouk de Water & Sean Irvine 144
19 7388 Φ2017(4616) 2001 David Broadhurst & Bouk de Water 145
20 6996 Φ1801(7698) 2001 David Broadhurst 155

2002

RankDigitsGRUYearProved ByNow
1 17879 Φ4201(18067) 2002 Andy Steward 17
2 13034 Φ3361(7568) 2001 Andy Steward 47
3 12331 Φ3061(10708) 2002 Andy Steward 54
4 10871 Φ3121(3048) 2002 David Broadhurst, Bouk de Water & Andy Steward 69
5 10746 Φ3121(2781) 2001 Andy Steward 70
6 10711 Φ3061(3164) 2001 Andy Steward 71
7 10619 Φ2689(8917) 2001 Andy Steward 75
8 10109 Φ2521(10268) 2001 David Broadhurst & Bouk de Water 83
9 10072 Φ2521(9926) 2001 David Broadhurst & Sean Irvine 85
10 9947 Φ2521(8854) 2001 David Broadhurst 88
11 9151 Φ3061(978) 2001 Andy Steward 105
12 8836 Φ2341(5968) 2002 Andy Steward 113
13 8617 Φ2161(9751) 2001 David Broadhurst 114
14 8523 Φ2521(2409) 2001 David Broadhurst & Sean Irvine 118
15 8473 Φ2521(2302) 2001 David Broadhurst 119
16 8325 Φ2161(7147) 2001 David Broadhurst 123
17 8322 Φ5581(31) 2001 David Broadhurst & Sean Irvine 124
18 8113 Φ2161(5701) 2001 David Broadhurst 127
19 7927 Φ2161(4676) 2001 David Broadhurst 132
20 7873 Φ2161(4411) 2001 David Broadhurst 133

2003

RankDigitsGRUYearProved ByNow
1 17879 Φ4201(18067) 2002 Andy Steward 17
2 14676 Φ3499(15679) 2003 David Broadhurst & Bouk de Water 34
3 14369 Φ3673(8185) 2003 Andy Steward 36
4 13512 Φ3301(12432) 2003 Andy Steward 42
5 13034 Φ3361(7568) 2001 Andy Steward 47
6 12331 Φ3061(10708) 2002 Andy Steward 54
7 10871 Φ3121(3048) 2002 David Broadhurst, Bouk de Water & Andy Steward 69
8 10746 Φ3121(2781) 2001 Andy Steward 70
9 10711 Φ3061(3164) 2001 Andy Steward 71
10 10631 Φ2857(5273) 2003 Andy Steward 74
11 10619 Φ2689(8917) 2001 Andy Steward 75
12 10109 Φ2521(10268) 2001 David Broadhurst & Bouk de Water 83
13 10105 Φ2647(6588) 2003 David Broadhurst & Bouk de Water 84
14 10072 Φ2521(9926) 2001 David Broadhurst & Sean Irvine 85
15 10043 Φ2857(3284) 2003 Andy Steward 86
16 9947 Φ2521(8854) 2001 David Broadhurst 88
17 9151 Φ3061(978) 2001 Andy Steward 105
18 8836 Φ2341(5968) 2002 Andy Steward 113
19 8617 Φ2161(9751) 2001 David Broadhurst 114
20 8523 Φ2521(2409) 2001 David Broadhurst & Sean Irvine 118

2004

No new Top-20 primes were proven this year.

2005

RankDigitsGRUYearProved ByNow
1 23058 Φ6121(5855) 2005 Predrag Minovic & Larry Soule 10
2 19000 Φ4591(13782) 2005 Andy Steward 15
3 17879 Φ4201(18067) 2002 Andy Steward 17
4 16980 Φ4621(4735) 2005 David Broadhurst & Bouk de Water 20
5 16882 Φ4177(11031) 2005 David Broadhurst & Bouk de Water 21
6 14676 Φ3499(15679) 2003 David Broadhurst & Bouk de Water 34
7 14534 Φ4231(2728) 2005 Andy Steward 35
8 14369 Φ3673(8185) 2003 Andy Steward 36
9 13512 Φ3301(12432) 2003 Andy Steward 42
10 13461 Φ3319(11398) 2005 Andy Steward 43
11 13263 Φ3821(2963) 2005 Tom Wu 44
12 13258 Φ3697(3863) 2005 Andy Steward 45
13 13034 Φ3361(7568) 2001 Andy Steward 47
14 12919 Φ3877(2153) 2005 Tom Wu 49
15 12610 Φ4177(1046) 2005 David Broadhurst & Bouk de Water 52
16 12331 Φ3061(10708) 2002 Andy Steward 54
17 12302 Φ4363(661) 2005 Tom Wu 55
18 11955 Φ3037(8662) 2005 Andy Steward 57
19 11886 Φ3257(4469) 2005 Andy Steward 58
20 11748 Φ3187(4867) 2005 David Broadhurst & Bouk de Water 59

2006

RankDigitsGRUYearProved ByNow
1 37090 Φ8317(28839) 2006 Andy Steward 2
2 23058 Φ6121(5855) 2005 Predrag Minovic & Larry Soule 10
3 19000 Φ4591(13782) 2005 Andy Steward 15
4 17879 Φ4201(18067) 2002 Andy Steward 17
5 16980 Φ4621(4735) 2005 David Broadhurst & Bouk de Water 20
6 16882 Φ4177(11031) 2005 David Broadhurst & Bouk de Water 21
7 14676 Φ3499(15679) 2003 David Broadhurst & Bouk de Water 34
8 14534 Φ4231(2728) 2005 Andy Steward 35
9 14369 Φ3673(8185) 2003 Andy Steward 36
10 13512 Φ3301(12432) 2003 Andy Steward 42
11 13461 Φ3319(11398) 2005 Andy Steward 43
12 13263 Φ3821(2963) 2005 Tom Wu 44
13 13258 Φ3697(3863) 2005 Andy Steward 45
14 13034 Φ3361(7568) 2001 Andy Steward 47
15 12919 Φ3877(2153) 2005 Tom Wu 49
16 12782 Φ4801(460) 2006 Alex Kruppa, Predrag Minovic & Larry Soule 50
17 12610 Φ4177(1046) 2005 David Broadhurst & Bouk de Water 52
18 12331 Φ3061(10708) 2002 Andy Steward 54
19 12302 Φ4363(661) 2005 Tom Wu 55
20 11955 Φ3037(8662) 2005 Andy Steward 57

2007

RankDigitsGRUYearProved ByNow
1 37090 Φ8317(28839) 2006 Andy Steward 2
2 24506 Φ5953(13096) 2007 Andy Steward 7
3 23058 Φ6121(5855) 2005 Predrag Minovic & Larry Soule 10
4 19367 Φ4663(14261) 2007 Andy Steward 14
5 19000 Φ4591(13782) 2005 Andy Steward 15
6 18925 Φ4513(15637) 2007 Andy Steward 16
7 17879 Φ4201(18067) 2002 Andy Steward 17
8 16980 Φ4621(4735) 2005 David Broadhurst & Bouk de Water 20
9 16882 Φ4177(11031) 2005 David Broadhurst & Bouk de Water 21
10 15450 Φ3697(15134) 2007 Andy Steward 28
11 15038 Φ3889(7372) 2007 Andy Steward 32
12 14676 Φ3499(15679) 2003 David Broadhurst & Bouk de Water 34
13 14534 Φ4231(2728) 2005 Andy Steward 35
14 14369 Φ3673(8185) 2003 Andy Steward 36
15 13512 Φ3301(12432) 2003 Andy Steward 42
16 13461 Φ3319(11398) 2005 Andy Steward 43
17 13263 Φ3821(2963) 2005 Tom Wu 44
18 13258 Φ3697(3863) 2005 Andy Steward 45
19 13034 Φ3361(7568) 2001 Andy Steward 47
20 12919 Φ3877(2153) 2005 Tom Wu 49

2008

RankDigitsGRUYearProved ByNow
1 37090 Φ8317(28839) 2006 Andy Steward 2
2 24506 Φ5953(13096) 2007 Andy Steward 7
3 23333 Φ5347(23151) 2008 Andy Steward 9
4 23058 Φ6121(5855) 2005 Predrag Minovic & Larry Soule 10
5 19367 Φ4663(14261) 2007 Andy Steward 14
6 19000 Φ4591(13782) 2005 Andy Steward 15
7 18925 Φ4513(15637) 2007 Andy Steward 16
8 17879 Φ4201(18067) 2002 Andy Steward 17
9 17332 Φ4051(19026) 2008 Andy Steward 19
10 16980 Φ4621(4735) 2005 David Broadhurst & Bouk de Water 20
11 16882 Φ4177(11031) 2005 David Broadhurst & Bouk de Water 21
12 15450 Φ3697(15134) 2007 Andy Steward 28
13 15219 Φ3613(16339) 2008 Andy Steward 30
14 15051 Φ4177(4018) 2008 Andy Steward 31
15 15038 Φ3889(7372) 2007 Andy Steward 32
16 14676 Φ3499(15679) 2003 David Broadhurst & Bouk de Water 34
17 14534 Φ4231(2728) 2005 Andy Steward 35
18 14369 Φ3673(8185) 2003 Andy Steward 36
19 14240 Φ3967(3894) 2008 Andy Steward 37
20 14202 Φ3433(13735) 2008 Andy Steward 38

2009

RankDigitsGRUYearProved ByNow
1 37090 Φ8317(28839) 2006 Andy Steward 2
2 30056 Φ7411(11379) 2009 Andy Steward 4
3 26684 Φ7549(3429) 2009 Andy Steward 6
4 24506 Φ5953(13096) 2007 Andy Steward 7
5 23335 Φ11971(89) 2009 Tom Wu 8
6 23333 Φ5347(23151) 2008 Andy Steward 9
7 23058 Φ6121(5855) 2005 Predrag Minovic & Larry Soule 10
8 19756 Φ4969(9473) 2009 Tom Wu 13
9 19367 Φ4663(14261) 2007 Andy Steward 14
10 19000 Φ4591(13782) 2005 Andy Steward 15
11 18925 Φ4513(15637) 2007 Andy Steward 16
12 17879 Φ4201(18067) 2002 Andy Steward 17
13 17332 Φ4051(19026) 2008 Andy Steward 19
14 16980 Φ4621(4735) 2005 David Broadhurst & Bouk de Water 20
15 16882 Φ4177(11031) 2005 David Broadhurst & Bouk de Water 21
16 15545 Φ4201(5024) 2009 Andy Steward 25
17 15539 Φ5483(683) 2009 Andy Steward 26
18 15450 Φ3697(15134) 2007 Andy Steward 28
19 15219 Φ3613(16339) 2008 Andy Steward 30
20 15051 Φ4177(4018) 2008 Andy Steward 31

2010

RankDigitsGRUYearProved ByNow
1 41382 Φ12973(1549) 2010 Tom Wu 1
2 37090 Φ8317(28839) 2006 Andy Steward 2
3 30056 Φ7411(11379) 2009 Andy Steward 4
4 28856 Φ6997(13320) 2010 Andy Steward 5
5 26684 Φ7549(3429) 2009 Andy Steward 6
6 24506 Φ5953(13096) 2007 Andy Steward 7
7 23335 Φ11971(89) 2009 Tom Wu 8
8 23333 Φ5347(23151) 2008 Andy Steward 9
9 23058 Φ6121(5855) 2005 Predrag Minovic & Larry Soule 10
10 22393 Φ6781(2008) 2010 Andy Steward 11
11 19756 Φ4969(9473) 2009 Tom Wu 13
12 19367 Φ4663(14261) 2007 Andy Steward 14
13 19000 Φ4591(13782) 2005 Andy Steward 15
14 18925 Φ4513(15637) 2007 Andy Steward 16
15 17879 Φ4201(18067) 2002 Andy Steward 17
16 17648 Φ4099(20250) 2010 Andy Steward 18
17 17332 Φ4051(19026) 2008 Andy Steward 19
18 16980 Φ4621(4735) 2005 David Broadhurst & Bouk de Water 20
19 16882 Φ4177(11031) 2005 David Broadhurst & Bouk de Water 21
20 16407 Φ4703(3085) 2010 Andy Steward 22

2011

RankDigitsGRUYearProved ByNow
1 41382 Φ12973(1549) 2010 Tom Wu 1
2 37090 Φ8317(28839) 2006 Andy Steward 2
3 36758 Φ10099(4366) 2011 Andy Steward 3
4 30056 Φ7411(11379) 2009 Andy Steward 4
5 28856 Φ6997(13320) 2010 Andy Steward 5
6 26684 Φ7549(3429) 2009 Andy Steward 6
7 24506 Φ5953(13096) 2007 Andy Steward 7
8 23335 Φ11971(89) 2009 Tom Wu 8
9 23333 Φ5347(23151) 2008 Andy Steward 9
10 23058 Φ6121(5855) 2005 Predrag Minovic & Larry Soule 10
11 22393 Φ6781(2008) 2010 Andy Steward 11
12 21211 Φ4933(19979) 2011 Andy Steward 12
13 19756 Φ4969(9473) 2009 Tom Wu 13
14 19367 Φ4663(14261) 2007 Andy Steward 14
15 19000 Φ4591(13782) 2005 Andy Steward 15
16 18925 Φ4513(15637) 2007 Andy Steward 16
17 17879 Φ4201(18067) 2002 Andy Steward 17
18 17648 Φ4099(20250) 2010 Andy Steward 18
19 17332 Φ4051(19026) 2008 Andy Steward 19
20 16980 Φ4621(4735) 2005 David Broadhurst & Bouk de Water 20