Riesel primes of the form 6•10n-1

Current data

k , b : 6 , 10 Count : 30 Nash : 4289 Max n : 600,000 Date : 2024-10-06

1, 2, 4, 5, 7, 10, 13, 22, 23, 28, 34, 40, 61, 73, 361, 490, 613, 1624, 2000, 2994, 4301, 4332, 18668, 32544, 34936, 267598, 270658, 293134, 319889, 414508

Remarks :

sequence A056716 in OEIS See also Near-repdigit 599...99 Studio Kamada

History

• 2024-10-06: Checked n = 230000 - 600000, Gary Barnes, released
• 2024-09-24: Reserved by Gary Barnes for n = 230000 - 600000
• 2021-10-05: Checked n = 1040001 - 1050000, Predrag Kurtovic
• 2021-01-10: Checked n = 1030001 - 1040000, Predrag Kurtovic
• 2019-01-29: Checked n = 1020001 - 1030000, Predrag Kurtovic
• 2017-11-08: Checked n = 1015001 - 1020000, Predrag Kurtovic
• 2017-06-12: Checked n = 1010001 - 1015000, Predrag Kurtovic
• 2016-09-28: Checked n = 1000001 - 1010000, Predrag Kurtovic
• 2011-04-17: Checked n = 200000 - 230000, Gary Barnes
• 2011-02-20: Checked n = 150000 - 200000, Gary Barnes
• 2011-01-18: Checked n = 100000 - 150000, Gary Barnes
• 2011-01-08: Found n = 414508, David Broadhurst
• 2010-12-01: Checked n = 1 - 100000, Gary Barnes, double-check n = 1 - 30000
• 2010-11-19: Found n = 319889, David Broadhurst
• 2010-11-19: Found n = 293134, David Broadhurst
• 2010-11-19: Found n = 270658, David Broadhurst
• 2010-11-15: Found n = 267598, David Broadhurst
• 2010-09-30: Checked n = 1 - 30000, Ray Chandler
• 2004-02-12: Checked n = 1600 - 15000, Hugo Pfoertner
• 2001-09-30: Found n = 34936, Eric J. Sorensen
• 2001-09-26: Found n = 32544, Eric J. Sorensen
• 2000-08-11: Checked n = 1 - 1600, Robert G. Wilson
• 2000-02-22: Found n = 18668, Ray Ballinger
• 1988: Found n = 4332, Harvey Dubner
• 1988: Found n = 4301, Harvey Dubner