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Proth primes of the form 31•2n+1

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Current data

k , b : 31 , 2
Type : Low
Count : 14
Nash : 839
Max n : 9,000,000
Date : 2021-04-01
8[1], 60, 68[2], 140[3], 216[4], 416, 1808[5], 1944[6], 9096, 76596, 93168, 4673544[7], 5560820[8], 8348000
Remarks :
The sequence A032365 in OEIS

Notes

History