Riesel prime 2 39939

Current data

k , b : 39939 , {{{Rb}}} Count : 26 Nash : 1477 Max n : 50,000 Date : 2020-07-05

3, 5, 9, 17, 21, 23, 41, 47, 77, 179, 279, 407, 791, 929, 1323, 1929, 2757, 3009, 3375, 5277, 10019, 11363, 16617, 17483, 28359, 36927

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.

[[Category:Riesel {{{Rb}}}|#.....39939]]

History

• 2020-07-05: Checked to n = 50000, Karsten Bonath