Proth primes of the form 31•2ⁿ+1

Reserved! This sequence is currently part of Multi Reservation 20: Riesel problem 3.

Current data

`k` , `b` :	31 , {{{Pb}}}
Count :	12
Nash :	839
Max `n` :	2,000,000
Date :	2024-09-06
Reserved :	Alexander JonesAlexander Jones/Reserved

8, 60, 68, 140^[1], 216^[2], 416, 1808, 1944, 9096, 76596, 93168, 8348000

[[Category:Proth {{{Pb}}}|#.....00031]][[Category:Proth {{{Pb}}} Low-weight|#.....00031]]

2021-01-19: Found n = 8348000, Igor Karpenko, PrimeGrid Fermat Divisor Search
2018: Checked to n = 3321996, PrimeGrid
1995-08: Found n = 93168, Jeffrey Young
1995-08: Found n = 76596, Jeffrey Young
1983: Found n = 9096, Wilfrid Keller