Williams primes of the form 8•9n-1

Current data

Base : 9 Count : 17 Max n : 200,000 Date : 2016-02-02

1, 2, 5, 25, 85, 92, 97, 649, 2017, 2978, 3577, 4985, 17978, 21365, 66002, 95305, 142199

Remarks :

Do not add primes here. Only add primes 2*n to Riesel 8•3n-1. For earlier history, see above reused Riesel sequence. The sequence A268356 in OEIS

History

• 2016-02-02: Checked n = 100000 - 200000, Robert Price
• 2016-02-02: Found n = 142199, Robert Price
• 2014-03-16: Checked to n = 100000, Robert Price, from Riesel 8•3ⁿ-1