Riesel primes of the form 8•10ⁿ-1

Reserved! This sequence is currently reserved by: Gary Barnes

Current data

`k` , `b` :	8 , 10
Count :	24
Nash :	4046
Max `n` :	230,000
Date :	2024-09-24
Reserved :	Gary BarnesGary Barnes/Reserved

1, 4, 5, 8^[1], 10, 25, 49, 76, 128, 175, 238, 550, 796, 1219, 2012, 2846, 11336, 21296, 49808, 74318, 236891, 608989, 1715905, 5112847

Remarks :

2024-09-24: Reserved by Gary Barnes for n = 230000 - 600000
2024-01-30: Found n = 5112847, Ryan Propper, Serge Batalov
2020-08-04: Found n = 1715905, Ryan Propper
2017-10-13: Checked n = 1085000 - 1100000, Predrag Kurtovic
2017-10-07: Checked n = 1060001 - 1085000, Predrag Kurtovic
2017-09-22: Checked n = 1040001 - 1060000, Predrag Kurtovic
2017-01-23: Checked n = 1030001 - 1040000, Predrag Kurtovic
2016-03-23: Checked n = 1016001 - 1030000, Predrag Kurtovic
2015-01-17: Checked n = 1000001 - 1016000, Predrag Kurtovic
2011-05-25: Found n = 608989, David Broadhurst
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
2010-12-01: Checked n = 1 - 100000, Gary Barnes, double-check n = 1 - 30000
2010-11-06: Found n = 236891, David Broadhurst
2010-09-30: Checked n = 1 - 30000, Ray Chandler
2005-02-20: Checked n = 1600 - 3000, ??
2004-09-01: Found n = 74318, Eric J. Sorensen
2002-01-03: Found n = 49808, Eric J. Sorensen
2001-09-16: Found n = 21296, Eric J. Sorensen
2000-08-11: Checked n = 1 - 1600, Robert G. Wilson
2000-02-17: Found n = 2846, Ray Ballinger
2000-02-17: Found n = 2012, Ray Ballinger
1994-12-01: Found n = 11336, Harvey Dubner