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Proth primes of the form 66741•2n+1

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Current data

k-value : 66741
Count : 9
Nash : 811
Max n : 50.000
Date : 2020-07-05
5, 51, 95, 117, 237[1], 357, 2231, 3767, 6837
Remarks :
This k-value seems the smallest k ≡ 0 mod 3 for which k•2n+1 is never prime for an even n. See Liskovets-Gallot conjectures.

Notes

  1. Twin n=237

History