Riesel primes of the form 1623•2n-1

Current data

k , b : 1623 , 2 Type : 3 Count : 82 Nash : 3803 Max n : 1,000,000 Date : 2013-02-19

2, 3, 7, 16, 22, 24, 34, 35, 52, 55, 64, 94, 99, 112, 127, 128, 140, 244, 262, 263, 282, 292, 295, 346, 423, 594, 646, 676, 724, 1238, 1472, 2092, 2346, 2564, 3786, 3792, 4684, 4730, 5330, 6823, 6922, 7448, 7768, 9579, 11956, 14222, 14422, 14926, 15266, 17027, 20600, 27776, 39663, 42626, 46652, 49828, 51555, 54544, 56822, 68994, 76640, 92548, 103167, 110852, 112246, 115502, 124615, 126756, 141643, 227516, 242638, 356936, 481564, 491038, 507088, 524063, 730642, 772139, 810722, 834496, 844007, 883904

History

• 2013-02-19: Checked to n = 1000000, NPLB Drive 10, released
• 2012-08-10: Found n = 883904, Lennart Vogel, NPLB Drive 10
• 2012-07-09: Found n = 844007, Ian M. Gunn, NPLB Drive 10
• 2012-06-27: Found n = 834496, Gary Barnes, NPLB Drive 10
• 2012-05-27: Found n = 810722, Gary Barnes, NPLB Drive 10
• 2012-07-03: Found n = 772139, Ian M. Gunn, NPLB Drive 10
• 2011-06-13: Found n = 730642, Chris Chatfield, NPLB Drive 10
• 2010-11-29: 481564 confirmed, Michael Kwok, Twin Prime Search 480000
• 2009-06-06: Checked to n = 350000, NPLB Drive 9B, released
• 2009-04-13: Found n = 524063, David James, NPLB Drive 10
• 2009-04-07: Checked to n = 500000, NPLB Drive 8, released
• 2009-04-06: Found n = 507088, Gary Barnes, NPLB Drive 10
• 2009-03-31: Reserved by NPLB Drive 10, for 500000 ≤ n ≤ 1000000
• 2009-03-24: Found n = 491038, Chris Chatfield, NPLB Drive 8
• 2009-03-08: Found n = 481564, Brian Lody, NPLB Drive 8
• 2009-01-28: Checked to n = 200000, NPLB Drive 9A, released
• 2009-01-20: Reserved by NPLB Drive 9B, for 200000 ≤ n ≤ 350000
• 2009-01-19: Found n = 356936, Gary Barnes, NPLB Drive 8
• 2009-01-05: Reserved by NPLB Drive 9A, for 50000 ≤ n ≤ 200000
• 2008-12-30: Reserved by NPLB Drive 8, for 350000 ≤ n ≤ 500000
• 2007-10-24: Found n = 1620, Jens Kruse Andersen