Riesel primes of the form 11415•2n-1

Current data

k , b : 11415 , 2 Upload me! Type : 315 Count : 76 Nash : 4541 Max n : 500,000 Date : 2022-11-19

2, 4, 6, 10, 14, 15, 26, 30, 33, 35, 39, 51, 63, 68, 114, 131, 179, 193, 200, 256, 330, 359, 473, 519, 628, 651, 815, 891, 1041, 1291, 1592, 2550, 2978, 3190, 3449, 3536, 3644, 4009, 4352, 4539, 6313, 6873, 7022, 8631, 8639, 9388, 14198, 15705, 20668, 23668, 25010, 40050, 64432, 80855, 83746, 88895, 89432, 103828, 104678, 146260, 155103, 185169, 200852, 241683, 258601, 296216, 327231, 348231, 363134, 432771, 432916, 434272, 479354, 480763, 491296, 492561

Remarks :

Available sieve file: n=250k–500k, P=500T, 20943 candidates

History

• 2022-11-19: 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
• 2021-04-10: Checked to n = 100000, Alexander Jones
• 2020-10-13: Checked to n = 50000, Alexander Jones
• 2011-11-23: Checked to n = 20000, Thomas Ritschel
• 2011-09-21: Found n = 491296, Lennart Vogel, Twin Prime Search
• 1998-08-24: Found n = 25010, Jim Buddenhagen