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Proth primes of the form 13•2n+1
Current data
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Remarks : |
The sequence A032356 in OEIS |
Notes
- ↑ Is GF Divisor of xGF(1,12,11)
- ↑ Is GF Divisor of xGF(7,6,5) [+2]
- ↑ Is GF Divisor of GF(9,7) [+2]
- ↑ Is GF Divisor of F(18) [+8]
- ↑ Is GF Divisor of xGF(27,5,3) [+2], Near Cullen 26•227+1
- ↑ Is GF Divisor of GF(81,10)
- ↑ Is GF Divisor of xGF(187,5,3) [+6]
- ↑ Is GF Divisor of GF(307,12)
- ↑ Is GF Divisor of xGF(315,6,5) [+1]
- ↑ Is GF Divisor of GF(999,3) [+3]
- ↑ Is GF Divisor of xGF(28278,9,2)
- ↑ Is GF Divisor of xGF(38005,7,6) [+2]
- ↑ Is GF Divisor of xGF(43853,5,4) [+2]
- ↑ Is GF Divisor of xGF(88017,11,4) [+1]
- ↑ Is GF Divisor of xGF(109256,5,3) [+2]
- ↑ Is GF Divisor of F(114293) [+5]
- ↑ Is GF Divisor of xGF(521305,4,3) [+1]
- ↑ Is GF Divisor of GF(562454,5) [+1]
- ↑ Is GF Divisor of xGF(684559,5,3) [+5]
- ↑ Is GF Divisor of xGF(1038895,5,3) [+1]
- ↑ Is GF Divisor of GF(1499875,3) [+5]
- ↑ Is GF Divisor of GF(1861731,6) [+2]
- ↑ Is GF Divisor of xGF(4998361,5,2) [+2]
- ↑ Is GF Divisor of F(5523858) [+6]
- ↑ Is GF Divisor of xGF(6481774,5,2) [+5]
- ↑ Is GF Divisor of xGF(8989854,6,5) [+3]
- ↑ Is GF Divisor of xGF(15294533,9,2) [+1]
- ↑ Is GF Divisor of xGF(16828071,7,2) [+4]
History
- 2023-10-11: Found n = 16828072, Ryan Propper
- 2023-09-30: Found n = 15294536, Ryan Propper
- 2021-04-01: Checked to n = 9000000, PrimeGrid Fermat Divisor Search
- 2020-03-10: Found n = 8989858, Ryan Propper
- 2020-03-09: Found n = 6481780, Ryan Propper
- 2020-01-22: Found n = 5523860, James Scott Brown, PrimeGrid Fermat Divisor Search (Official announcement)
- 2019-07: Checked n = 3322000 - 3640000, PrimeGrid Proth Mega Prime Search
- 2014-07-15: Found n = 4998362, Mark Rodenkirch
- 2005-11-14: Found n = 1861732, Peter Grobstich
- 2004-12-30: Found n = 1499876, Peter Grobstich
- 2004-01-21: Found n = 1038896, Peter Grobstich
- 2003-07-01: Found n = 684560, Peter Grobstich
- 2003-06-10: Found n = 562456, Peter Grobstich
- 2003-05-14: Found n = 521306, Peter Grobstich
- 1995-08: Found n = 114296, Jeffrey Young
- 1995-08: Found n = 109258, Jeffrey Young
- 1995-08: Found n = 88018, Jeffrey Young
- 1993-05: Found n = 43856, Jeffrey Young
- 1992: Found n = 38008, Harvey Dubner
- 1992-10: Found n = 28280, Harvey Dubner
- 1979: Checked n = 1500 - 4000, Gordon V. Cormack, Hugh C. Williams
- 1886: Found n = 28, Paul Seelhoff
- 1886: Found n = 20, Paul Seelhoff