Proth primes of the form 3777•2n+1

Reserved! This sequence is currently part of Multi Reservation 25: PrimeGrid Proth Prime Search Extended.

Current data

k , b : 3777 , 2 Type : 3 Count : 61 Nash : 3246 Max n : 1,980,000 Date : 2024-07-26 Reserved : PrimeGridPrimeGrid/Reserved

8, 10, 12, 15, 20, 22, 24, 26, 36, 40, 59, 62, 80, 155, 190, 202, 230, 231, 234, 270, 327, 342, 347, 386, 396, 419, 446, 512, 1286, 1395, 1448, 1482, 1630, 1784, 2000, 2891, 7554, 7995, 8642, 10570, 13388, 13980, 20396, 28227, 29294, 29687, 39876, 69771, 70494, 91594, 99036, 106618, 157610, 283179, 307090, 448364, 695240, 698399, 917700, 967076, 3374072

History

• 2023-10-21: Checked n = 3322000 - 3486000, PrimeGrid Proth Mega Prime Search
• 2021-07-30: Found n = 3374072, Seonghwan Kim, PrimeGrid Proth Mega Prime Search
• 2012-08-15: Found n = 967076, Honza Cholt, PrimeGrid Proth Prime Search Extended
• 2012-06-22: Found n = 917700, Honza Cholt, PrimeGrid Proth Prime Search Extended
• 2011-09-03: Found n = 698399, Xavier Droniou, PrimeGrid Proth Prime Search Extended
• 2011-09-03: Found n = 695240, Valter Cavecchia, PrimeGrid Proth Prime Search Extended
• 1996-05-01: Found n = 7995, Patrick Demichel
• 1989: Found n = 7554, Harvey Dubner