Riesel primes of the form 249•2ⁿ-1

Reserved! This sequence is currently part of Multi Reservation 7: NPLB K300 Drive 1.

Current data

`k` , `b` :	249 , 2
Type :	3
Count :	24
Nash :	1592
Max `n` :	2,800,000
Date :	2024-11-13
Reserved :	No Prime Left BehindNo Prime Left Behind/Reserved

8^[1], 9, 12, 41, 57, 156, 201, 249^[2], 612, 956, 1617, 2064, 2091, 2547, 4512, 5696, 9608, 11444, 20556, 33896, 77079, 89004, 251036, 2001627

2024-04-23: 2001627 confirmed, Gary Barnes, NPLB K300 Drive 1
2024-04-23: Reserved by NPLB K300 Drive 1 for n > 2000000
2021-03-21: Checked n = 1 - 1000000, Gary Barnes, double check, results included
2020-03-13: Checked to n = 2000000, Michael Curtis, released
2015-02-19: Found n = 2001627, Michael Curtis
2015-02-18: Reserved by Michael Curtis from n=2000000
2013-03-30: Checked to n = 2000000, David Metcalfe, released
2013-02-02: Reserved by David Metcalfe from n=1300000
2012-05-14: Checked to n = 1300000, James P. Burt, released
2011-12-31: Checked to n = 1100000, James P. Burt
2011-12-10: Reserved by James P. Burt from n=1000000
2009-07-30: Reserved by Borys Jaworski from n=1000000
2005-11-26: Found n = 251036, Jun Tajima
2004-11-05: Checked n = 200000 - 230000, Steven Harvey, released