Proth primes of the form 20•3n+1

Current data

k , b : 20 , 3 Count : 31 Nash : 3263 Max n : 200,000 Date : 2024-09-16

1, 2, 3, 4, 5, 8, 16, 19, 28, 50, 134, 280, 445, 620, 965, 1349, 1378, 1540, 1967, 2260, 3118, 5440, 5734, 7899, 12172, 13893, 14732, 26902, 27803, 39322, 99349

History

• 2024-09-16: Checked n = 100000 - 200000, Gary Barnes, released
• 2021-03-09: Checked n = 1 - 100000, Paul Vanderveen
• 2004-02-03: Found n = 99349, Peter Benson