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Riesel primes of the form 381•2n-1

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Reserved! This sequence is currently part of Multi Reservation 26: NPLB Drive 19.

Current data

k , b : 381 , 2
Type : 3
Count : 51
Nash : 2491
Max n : 3,100,000
Date : 2024-08-15
Reserved : No Prime Left BehindNo Prime Left Behind/Reserved
1[1], 2, 7, 9, 11, 17[2], 21[3], 27, 49, 61, 79, 119, 467, 1035, 2185, 2307, 2429, 2815, 3085, 3990, 4431, 4647, 4697, 6734, 11189, 12770, 13891, 19227, 20114, 29045, 31765, 49931, 59055, 67242, 67597, 81189, 115459, 115947, 206391, 230701, 288935, 303722, 398511, 469371, 618929, 1070022, 1302991, 1646029, 1974841, 2801281, 2820157

Notes

  1. S.G. n=1
  2. Twin n=17
  3. Twin n=21

History