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Proth primes of the form 7•2n+1
Current data
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Remarks : |
The sequence A002253 in OEIS |
Notes
- ↑ Is GF Divisor of xGF(1,5,2) [+3]
- ↑ Is GF Divisor of xGF(2,6,5) [+4]
- ↑ Is GF Divisor of xGF(4,7,2) [+6]
- ↑ Is GF Divisor of F(12) [+6]
- ↑ Is GF Divisor of xGF(19,3,2) [+8], Sophie Germain n=20
- ↑ Is GF Divisor of xGF(25,4,3) [+5]
- ↑ Is GF Divisor of GF(49,3) [+3]
- ↑ Is GF Divisor of xGF(51,7,5) [+5]
- ↑ Is GF Divisor of xGF(91,5,2) [+5]
- ↑ Is GF Divisor of F(117) [+4]
- ↑ Is GF Divisor of GF(171,5) [+6]
- ↑ Is GF Divisor of xGF(176,7,4) [+4]
- ↑ Is GF Divisor of xGF(189,4,3) [+5]
- ↑ Is GF Divisor of F(284) [+4]
- ↑ Is GF Divisor of F(316) [+16]
- ↑ Is GF Divisor of GF(389,6) [+4], Sophie Germain n=390
- ↑ Is GF Divisor of GF(431,6) [+4]
- ↑ Is GF Divisor of GF(610,7) [+5]
- ↑ Is GF Divisor of GF(828,5) [+5]
- ↑ Is GF Divisor of GF(1803,5) [+6]
- ↑ Is GF Divisor of xGF(2255,4,3) [+5]
- ↑ Is GF Divisor of xGF(6613,3,2) [+3]
- ↑ Is GF Divisor of xGF(13495,3,2) [+5]
- ↑ Is GF Divisor of xGF(15493,3,2) [+4]
- ↑ Is GF Divisor of GF(16695,5) [+4]
- ↑ Is GF Divisor of GF(22385,6) [+4]
- ↑ Is GF Divisor of GF(54485,3) [+7]
- ↑ Is GF Divisor of xGF(88065,3,2) [+6]
- ↑ Is GF Divisor of F(95328) [+25]
- ↑ Is GF Divisor of xGF(207083,4,3) [+4]
- ↑ Is GF Divisor of xGF(283033,6,5) [+4]
- ↑ Is GF Divisor of GF(561815,5) [+3]
- ↑ Is GF Divisor of xGF(804531,5,4) [+4]
- ↑ Is GF Divisor of GF(811228,5) [+5]
- ↑ Is GF Divisor of GF(1491851,6) [+5]
- ↑ Is GF Divisor of xGF(2139911,5,2) [+5]
- ↑ Is GF Divisor of F(2167797) [+11]
- ↑ Is GF Divisor of xGF(2915951,5,2) [+6]
- ↑ Is GF Divisor of xGF(3015759,5,2) [+3]
- ↑ Is GF Divisor of GF(3511773,6) [+5]
- ↑ Is GF Divisor of xGF(5775995,5,4) [+4]
- ↑ Is GF Divisor of F(18233954) [+9]
- ↑ Is GF Divisor of xGF(20267499,7,6) [+6]
History
- 2022-07-21: Found n = 20267500, Ryan Propper
- 2021-04-01: Checked n = 6000000 - 9000000, PrimeGrid Fermat Divisor Search
- 2020-10-12: GF Divisors for n = 18233956, Gary B. Gostin
- 2020-10-01: Found n = 18233956, Ryan Propper
- ?: Checked to n = 6000000, PrimeGrid Proth Prime Search
- 2012-11-10: Found n = 5775996, Martyn Elvy, PrimeGrid Proth Prime Search (Official announcement)
- 2008-11-14: Found n = 3511774, Curtis Cooper
- 2008-06-09: Found n = 2915954, Curtis Cooper
- 2008-01-30: Found n = 3015762, Curtis Cooper
- 2007-05-12: Found n = 2139912, Curtis Cooper
- 2007-04-15: Found n = 2167800, Curtis Cooper
- 2005-03-02: Found n = 1491852, Shoichiro Yamada, Satoshi Noda, Takahiro Nohara
- 2003-12-10: Found n = 804534, Kevin Odermatt
- 2003-06-15: Found n = 561816, Payam Samidoost
- 2002-12-18: Found n = 811230, Payam Samidoost
- 1998-10-01: Found n = 283034, Jeffrey Young
- 1998-07-08: Found n = 207084, Skip Key
- 1995-08: Found n = 95330, Jeffrey Young
- 1995-08: Found n = 88066, Jeffrey Young
- 1992-10-01: Found n = 16696, Harvey Dubner
- 1992: Found n = 22386, Harvey Dubner
- 1987: Found n = 54486, Jeffrey Young
- 1984: Found n = 15494, Wilfrid Keller
- 1984: Found n = 13496, Wilfrid Keller
- 1979: Checked n = 1500 - 8000, Gordon V. Cormack, Hugh C. Williams
- 1979: Found n = 1804, Gordon V. Cormack, Hugh C. Williams
- 1979: Found n = 2256, Gordon V. Cormack, Hugh C. Williams
- 1979: Found n = 6614, Gordon V. Cormack, Hugh C. Williams