Difference between revisions of "Riesel prime 2 15"

Latest revision as of 01:46, 5 May 2025

Current data

`k` , `b` :	15 , 2
Type :	315
Count :	58
Nash :	2221
Max `n` :	7,000,000
Date :	2024-08-14

1^[1], 2^[2], 4^[3], 5, 10^[4], 14^[5], 17, 31^[6], 41, 73, 80^[7], 82, 116^[8], 125, 145, 157, 172^[9], 202, 224^[10], 266, 289, 293, 463, 1004^[11], 1246, 2066, 2431, 2705, 4622, 5270, 7613, 21727, 21962, 40742, 41054, 60622, 83263, 83669, 91457, 103940^[12], 104177, 108124^[13], 115327, 161453, 172714, 454681, 568780^[14], 656264^[15], 712294, 902474, 1084010, 1344313, 1837873, 2323205, 3668194, 6429089, 6993631, 9482269

Remarks :

The sequence A002237 in OEIS
See also Williams 15•16ⁿ-1

Notes

History

2024-08-14: Found n = 9482269, Ryan Propper
2024-06-13: Checked n = 6000000 - 7000000, Ryan Propper
2021-11-20: Checked n = 1908000 - 1967597, 2062945 - 6134000, RPS Drive K15, released
2021-10-08: Found n = 6429089, Ryan Propper
2021-08-25: Found n = 6993631, Ryan Propper
2021-03-21: Checked n = 1 - 1000000, Gary Barnes, double check, results included
2013-10-15: Found n = 3668194, Ivica Kelava, RPS Drive K15
2011-07-11: Found n = 2323205, Thomas Ritschel, RPS Drive K15
2010-01-03: Checked n = 1880000 - 1908000, RPS Drive K15
2009-02-13: Checked n = 1000000 - 1880000, RPS Drive K15
2009-01-09: Checked n = 1967597 - 2062945, Peter Benson
2009-01-09: Checked n = 950000 - 1045993, 1140017 - 1196900, Peter Benson ( n = 1000000 - 1045993 & n = 1140017 - 1196900 also done by RPS Drive K15 )
2008-12-16: Found n = 1837873, Even Stokkedalen, RPS Drive K15
2007-01-05: Found n = 1344313, David Metcalfe, RPS Drive K15
2006-09-28: Found n = 1084010, David Metcalfe, RPS Drive K15
2006-09-12: Reserved by RPS Drive K15 from n = 1000000
2006-08-12: Checked n = 620000 - 1000000, Robert Smith, see Riesellist 2006-08-12
2006-03-02: Found n = 902474, Robert Smith
2005-08-12: Found n = 712294, Robert Smith
2005-05-17: Found n = 656264, Robert Smith
2005-03-29: Checked n = 568000 - 620000, Robert Smith
2005-03-01: Checked n = 505000 - 568000, Robert Smith, see Riesellist 2005-03-01
2005-02-27: Found n = 568780, Robert Smith
2004-09-06: Checked n = 475000 - 505000, Robert Smith
2004-06-03: Checked n = 340000 - 475000, Robert Smith
2004-05-13: Found n = 454681, Robert Smith
2004-04-15: Checked n = 212000 - 340000, Robert Smith
2004-03-30: Checked n = 150000 - 212000, Robert Smith
2004-03-30: Found n = 172714, Robert Smith
2004-03-30: Found n = 161453, Robert Smith
2004-03-28: Checked n = 100000 - 150000, Jocelyn Larouche, released
2004-03-25: Checked to n = 100000, Robert Smith
2003-04-07: Found n = 115327, Steven Harvey
1999-08-09: Found n = 91457, Michael J. Graef
1999-07-08: Found n = 83669, Michael J. Graef
1999-07-07: Found n = 83263, Michael J. Graef
1999-06-29: Found n = 60622, Michael J. Graef
1999-06-03: Found n = 41054, Michael J. Graef
1999-06-03: Found n = 40742, Michael J. Graef
1998-08-09: Found n = 21962, Wilfrid Keller
1998-08-08: Found n = 21727, Wilfrid Keller
1994: Found n = 7613, Harvey Dubner

[1] Jump up ↑ Sophie Germain n=1, Twin n=1

[2] Jump up ↑ Twin n=2

[3] Jump up ↑ Sophie Germain n=4, Twin n=4, Williams 15•16¹-1

[4] Jump up ↑ Twin n=10

[5] Jump up ↑ Near Woodall 15•2¹⁴-1

[6] Jump up ↑ Woodall, Woodall 30•2³⁰-1

[7] Jump up ↑ Williams 15•16²⁰-1

[8] Jump up ↑ Williams 15•16²⁹-1

[9] Jump up ↑ Williams 15•16⁴³-1

[10] Jump up ↑ Williams 15•16⁵⁶-1

[11] Jump up ↑ Williams 15•16²⁵¹-1

[12] Jump up ↑ Williams 15•16²⁵⁹⁸⁵-1

[13] Jump up ↑ Williams 15•16²⁷⁰³¹-1

[14] Jump up ↑ Williams 15•16¹⁴²¹⁹⁵-1

[15] Jump up ↑ Williams 15•16¹⁶⁴⁰⁶⁶-1

[1]

[2]

[3]

[4]

[5]

[6]

[7]

[8]

[9]

[10]

[11]

[12]

[13]

[14]

[15]

@@ Line 84: / Line 84: @@
 {{HistF|2007-01-05|1344313|David Metcalfe,RPS Drive K15|M#121415}}
 {{HistF|2006-09-28|1084010|David Metcalfe,RPS Drive K15|M#112536}}
-{{HistC|2006-09-12|620000-1000000|Robert Smith|M#111616}} ?
 {{HistR|2006-09-12|RPS Drive K15|M#5080}} from {{Rn|1000000|1000000}}
+{{HistC|2006-08-12|620000-1000000|Robert Smith}}, see [http://www.noprimeleftbehind.net/riesellist_20060812.htm Riesellist 2006-08-12]
 {{HistF|2006-03-02|902474|Robert Smith|M#94584}}
 {{HistF|2005-08-12|712294|Robert Smith|M#71738}}
 {{HistF|2005-05-17|656264|Robert Smith|M#68659}}
-{{HistC|2005-03-29|505000-620000|Robert Smith|M#67025}}
+{{HistC|2005-03-29|568000-620000|Robert Smith|M#67025}}
+{{HistC|2005-03-01|505000-568000|Robert Smith}}, see [http://www.noprimeleftbehind.net/riesellist_20050301.htm Riesellist 2005-03-01]
 {{HistF|2005-02-27|568780|Robert Smith|M#65819}}
 {{HistC|2004-09-06|475000-505000|Robert Smith|M#57223}}

Difference between revisions of "Riesel prime 2 15"

Latest revision as of 01:46, 5 May 2025

Current data

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