Currently there may be errors shown on top of a page, because of a missing Wiki update (PHP version and extension DPL3). |
Navigation
Topics | Help • Register • News • History • How to • Sequences statistics • Template prototypes |
Proth primes of the form 31•2n+1
Current data
|
|
Remarks : |
The sequence A032365 in OEIS See also Williams 31•32n+1 |
Notes
- ↑ Is GF Divisor of xGF(7,8,5)
- ↑ Williams 31•3212+1
- ↑ Is GF Divisor of xGF(67,11,2)
- ↑ Is GF Divisor of GF(139,3), Williams 31•3228+1
- ↑ Is GF Divisor of xGF(215,7,5) [+1]
- ↑ Is GF Divisor of xGF(1806,11,6)
- ↑ Is GF Divisor of xGF(1943,10,9)
- ↑ Is GF Divisor of GF(4673541,7)
- ↑ Is GF Divisor of GF(5560819,6), Williams 31•321112164+1
- ↑ Williams 31•321669600+1
History
- 2021-04-01: Checked to n = 9000000, PrimeGrid Fermat Divisor Search
- 2021-01-19: Found n = 8348000, Igor Karpenko, PrimeGrid Fermat Divisor Search (Official announcement)
- 2020-01-28: Found n = 5560820, James Scott Brown, PrimeGrid Fermat Divisor Search
- 2019-10-14: Found n = 4673544, Robert Heindl, PrimeGrid Fermat Divisor Search
- 2019-07: Checked n = 3322000 - 3640000, PrimeGrid Proth Mega Prime Search
- 2018: Checked to n = 3322000, PrimeGrid Proth Prime Search
- 1995-08: Found n = 93168, Jeffrey Young
- 1995-08: Found n = 76596, Jeffrey Young
- 1983: Found n = 9096, Wilfrid Keller