Riesel primes of the form 12387•2n-1

Current data

k , b : 12387 , 2 Type : 3 Count : 38 Nash : 1625 Max n : 500,000 Date : 2022-12-07

2, 8, 12, 36, 72, 86, 116, 156, 201, 252, 302, 321, 452, 537, 572, 684, 798, 1508, 1616, 1854, 3404, 3702, 5828, 6468, 8156, 11346, 18956, 24762, 39704, 50814, 53276, 64526, 181032, 249684, 271221, 365385, 447252, 498072

History

• 2022-12-07: Checked to n = 500000, Alexander Jones, released
• 2021-11-11: Sieve file created: n = 250000–500000, Alexander Jones, yoyo@home
• 2021-07-25: Reserved by Alexander Jones
• 2021-07-25: Checked to n = 250000, Predrag Kurtovic
• 2021-04-30: Checked to n = 150000, Alexander Jones
• 2021-04-14: Checked to n = 100000, Alexander Jones
• 2020-09-03: Checked to n = 50000, Karsten Bonath
• 2011-12-15: Found n = 498072, (Oddball), Twin Prime Search 480000
• 2011-11-23: Checked to n = 20000, Thomas Ritschel