Riesel primes of the form 251•2ⁿ-1

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

Current data

`k` , `b` :	251 , 2
Type :	Low
Count :	8
Nash :	417
Max `n` :	2,100,000
Date :	2024-04-29
Reserved :	No Prime Left BehindNo Prime Left Behind/Reserved

6, 110, 1302, 4598, 74030, 359790, 907478, 1269198

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
2010-04-30: Checked to n = 2000000, James P. Burt, results included
2010-03-29: Found n = 1269198, James P. Burt
2009-10-21: Sieving, James P. Burt
2009-10-05: Reserved by James P. Burt
2009-10-05: Checked to n = 1143000, Karsten Bonath released
2009-04-16: Checked to n = 1100000, Karsten Bonath
2009-01-30: Found n = 907478, Karsten Bonath
2009-01-05: Reserved by Karsten Bonath
2007-11-25: Checked to n = 805070, Chris Chatfield, sieve file included
2007-11-14: Checked to n = 800000, Chris Chatfield
2007-08-25: Checked to n = 700000, Chris Chatfield
2007-07-30: Checked to n = 600000, Chris Chatfield
2007-07-15: Reserved by Chris Chatfield from n=545000
2005-03-11: Found n = 359790, Jocelyn Larouche
1998-12-29: Found n = 74030, Ingo Buechel, Wilfrid Keller