Riesel primes of the form 231•2n-1

Reserved! This sequence is currently reserved by: Michael Curtis

Current data

k , b : 231 , 2 Type : 3 Count : 77 Nash : 3340 Max n : 3,000,000 Date : 2023-07-17 Reserved : Michael CurtisMichael Curtis/Reserved

1, 3, 6, 7, 21, 29, 46, 49, 54, 57, 73, 90, 118, 169, 207, 267, 287, 333, 354, 366, 370, 463, 493, 497, 507, 655, 729, 735, 757, 1054, 1377, 1770, 2098, 2886, 3225, 3611, 3625, 3657, 4849, 5706, 5749, 5771, 7110, 8395, 12150, 15658, 16182, 16693, 17363, 20279, 27619, 35953, 39733, 53949, 75349, 80638, 82887, 92154, 162154, 169955, 205017, 224297, 248359, 345183, 369583, 465391, 498961, 535713, 668218, 749301, 959375, 1169250, 1278235, 1332103, 1612617, 1860743, 2335281

History

• 2023-07-17: Checked to n = 3000000, Michael Curtis
• 2020-03-13: Checked to n = 2350000, Michael Curtis
• 2019-12-21: Found n = 2335281, Michael Curtis
• 2016-01-03: Checked to n = 2000000, Michael Curtis
• 2015-07-21: Found n = 1860743, Michael Curtis
• 2015-06-23: Found n = 1612617, Michael Curtis
• 2015-04-01: Checked to n = 1570000, Michael Curtis
• 2013-06-11: Checked to n = 1400000, Michael Curtis
• 2013-04-07: Checked to n = 1360000, Michael Curtis
• 2013-03-06: Found n = 1332103, Michael Curtis
• 2013-02-02: Reserved by Michael Curtis from n=13000000
• 2012-05-14: Checked to n = 1300000, James P. Burt, released
• 2012-05-11: Found n = 1278235, James P. Burt
• 2012-03-19: Found n = 1169250, James P. Burt
• 2011-12-31: Checked to n = 1100000, James P. Burt
• 2011-12-10: Reserved by James P. Burt from n=1000000
• 2009-07-30: Reserved by Borys Jaworski from n=1000000
• 2006-11-02: Found n = 959375, Larry Soule
• 2006-01-23: Found n = 749301, Larry Soule
• 2005-08-31: Found n = 668218, Larry Soule
• 2005-03-11: Found n = 535713, Larry Soule
• 2005-03-07: Found n = 498961, Larry Soule
• 2005-03-01: Found n = 465391, Larry Soule
• 2005-02-21: Found n = 369583, Larry Soule
• 2005-02-15: Found n = 345183, Larry Soule
• 2005-01-16: Found n = 248359, Charles H. Lasher
• 2005-01-14: Found n = 224297, Patrick Keller
• 2005-01-11: Found n = 205017, Patrick Keller
• 2004-05-12: Found n = 162154, Jocelyn Larouche
• 2004-03-01: Found n = 169955, Thomas Masser
• 2000-05-03: Found n = 53949, Phil Carmody
• 1999-02-09: Found n = 39733, Tom Kuechler
• 1999-02-09: Found n = 35953, Tom Kuechler
• 1999-01-26: Found n = 27619, Tom Kuechler
• 1989: Found n = 16182, Sergio Zarantonello, Joel Smith, Gene Smith, Bodo Parady, Landon Curt Noll, John Brown