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Proth primes of the form 5•2n+1

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Current data

k , b : 5 , 2
Type : Low
Count : 25
Nash : 891
Max n : 9,000,000
Date : 2021-04-01
1, 3[1], 7[2], 13[3], 15[4], 25[5], 39[6], 55[7], 75[8], 85[9], 127[10], 1947[11], 3313[12], 4687[13], 5947[14], 13165[15], 23473[16], 26607[17], 125413[18], 209787[19], 240937[20], 819739[21], 1282755[22], 1320487[23], 1777515[24]

Notes

History