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Proth primes of the form 31•2n+1
Current data
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Notes
- ↑ Divides GF(139,3)
- ↑ Divides GF(215,12)
- ↑ Divides GF(4673541,7)
- ↑ Divides GF(5560819,6)
History
- 2021-04-01: Checked to n = 9000000, PrimeGrid Fermat Divisor Search
- 2021-01-19: Found n = 8348000, Igor Karpenko, PrimeGrid Fermat Divisor Search
- 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
- 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