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Proth primes of the form 11•2n+1

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Current data

k , b : 11 , 2
Count : 37
Nash : 1387
Max n : 9,000,000
Date : 2023-01-08
1, 3[1], 5[2], 7[3], 19[4], 21[5], 43[6], 81[7], 125[8], 127[9], 209[10], 211[11], 3225[12], 4543[13], 10179[14], 15329[15], 18759[16], 28277[17], 93279[18], 105741[19], 268009[20], 412447[21], 525589[22], 644677[23], 886071[24], 960901[25], 1343347[26], 2230369[27], 2476839[28], 2691961[29], 2897409[30], 3771821[31], 8103463[32], 9381365[33], 10797109[34], 10803449[35], 15502315[36]
Remarks :
The sequence A002261 in OEIS

Notes

History