Riesel primes of the form 121•2ⁿ-1

Reserved! This sequence is currently reserved by: PrimeGrid

Current data

`k` , `b` :	121 , 2
Type :	Low
Count :	35
Nash :	965
Max `n` :	9,119,901
Date :	2020-03-11
Reserved :	PrimeGridPrimeGrid/Reserved

1, 3, 21, 27, 37, 43, 91, 117, 141, 163, 373, 421, 1581, 2035, 10701, 18931, 21307, 51195, 64579, 156541, 302097, 334257, 368059, 383061, 410131, 494317, 541621, 990219, 1039965, 1526097, 1589157, 1695499, 1954243, 2033941, 4553899

Remarks :

LLR status at PrimeGrid

2012-02-25: Found n = 4553899, Timothy D. Winslow, (Official announcement)
2007-12-02: Checked to n = 3016000, Justin Van Klein???
2006-01-28: Found n = 2033941, Szymon Banka
2006-01-20: Found n = 1954243, Szymon Banka
2005-09-06: Found n = 1695499, Rodger M. Ewing
2005-10-24: Found n = 1589157, Frank Clowes
2005-07-18: Found n = 1526097, Frank Clowes
2004-11-07: Found n = 1039965, Frank Clowes
2004-08-13: Found n = 990219, Dr. Michael E. Haas
2004-06-02: Found n = 541621, Frank Clowes
2004-06-02: Found n = 494317, Dr. Michael E. Haas
2004-07-21: Found n = 410131, Frank Clowes
2004-06-02: Found n = 383061, JF Boyer
2004-05-31: Found n = 368059, JF Boyer
2004-06-08: Found n = 334257, Rodger M. Ewing
2004-05-27: Found n = 302097, Rodger M. Ewing