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Proth primes of the form 99•10n+1

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Current data

k , b : 99 , 10
Type : 3
Count : 20
Nash : 3761
Max n : 100,000
Date : 2024-09-29
1, 2[1], 4[2], 8[3], 16[4], 20[5], 24[6], 72[7], 200[8], 359, 454[9], 624[10], 1054[11], 2060[12], 6301, 8083, 8407, 13159, 65059, 74957
Remarks :
The sequence A109713 in OEIS
See history at Studio Kamada k*10^n+1 form and difficulty 99*10^(w+1)+1.
For additional even n history, see Williams 99•100n+1.

Notes

History