Riesel primes of the form 18975•2n-1

Current data

k , b : 18975 , 2 Type : 315 Count : 87 Nash : 4465 Max n : 1,000,000 Date : 2021-07-20

3, 5, 10, 11, 12, 19, 20, 26, 28, 29, 48, 53, 60, 65, 76, 92, 94, 125, 145, 255, 288, 290, 305, 400, 415, 713, 831, 893, 905, 989, 1272, 1275, 1294, 1295, 1298, 1846, 1864, 1875, 1999, 2139, 2513, 2859, 2924, 3759, 4253, 5354, 5525, 5555, 5932, 6317, 7477, 7657, 7814, 8989, 10703, 14129, 14763, 15356, 16219, 21240, 28491, 31718, 32010, 41052, 41732, 44504, 63682, 71123, 81879, 101761, 106477, 130174, 137125, 148156, 174504, 188494, 200275, 260212, 300939, 362906, 402402, 421970, 456235, 593921, 613126, 962429, 999636

History

• 2021-07-20: Checked to n = 400000, Alexander Jones, released
• 2021-06-01: Checked to n = 375000, Alexander Jones
• 2021-01-13: Checked to n = 350000, Alexander Jones
• 2020-10-01: Checked to n = 325000, Alexander Jones
• 2020-06-17: Checked to n = 300000, Alexander Jones
• 2020-03-17: Reserved by Alexander Jones
• 2018-06-23: Checked n = 400000  -  1000000, RPS Drive 9, released
• 2011-11-23: Checked to n = 1007, Gary Barnes
• 2011-08-13: Found n = 999636, Edward Trice, RPS Drive 9
• 2011-06-14: Found n = 962429, Peter Benson, RPS Drive 9
• 2010-02-17: Found n = 613126, Predrag Minovic, RPS Drive 9
• 2010-01-07: Found n = 593921, Serge Batalov, RPS Drive 9
• 2009-05-27: Found n = 456235, Adam Sutton, RPS Drive 9
• 2009-05-13: Found n = 421970, Lennart Vogel, RPS Drive 9
• 2009-05-13: Found n = 402402, Predrag Minovic, RPS Drive 9
• 2009-05-12: Reserved by RPS Drive 9 for n > 400000