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Riesel primes of the form 681•2n-1

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Reserved! This sequence is currently part of Multi Reservation 3: NPLB Drive 18.

Current data

k , b : 681 , 2
Type : 3
Count : 35
Nash : 1986
Max n : 2,200,000
Date : 2024-07-30
Reserved : No Prime Left BehindNo Prime Left Behind/Reserved
1, 9, 31[1], 90, 114, 129, 138, 261, 349, 369, 451, 522, 874, 1042, 1314, 2934, 3729, 4737, 6870, 7398, 18313, 19818, 38587, 40218, 54850, 56133, 66102, 80073, 135081, 192109, 239410, 254947, 316819, 460099, 466063

Notes

  1. Twin n=31

History