Riesel primes of the form 187•2ⁿ-1

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

Current data

`k` , `b` :	187 , 2
Count :	26
Nash :	1158
Max `n` :	2,800,000
Date :	2024-11-13
Reserved :	No Prime Left BehindNo Prime Left Behind/Reserved

1, 17, 21, 53, 253, 2173, 3313, 5197, 5333, 6929, 28017, 40429, 47877^[1], 80617, 110513, 139673, 141201, 263093, 379649, 483153, 618293, 645401, 739321, 838101, 1461697, 2172693

2024-05-16: Reserved by NPLB K300 Drive 1 for n > 2300000
2022-04-10: Checked to n = 2300000, RPS Megabit Drive 2
2021-03-21: Checked n = 1 - 1000000, Gary Barnes, double check, results included
2019-08-18: Checked to n = 2200000, RPS Megabit Drive 2
2019-06-24: Found n = 2172693, David Metcalfe, RPS Megabit Drive 2
2015-06-19: Reserved by RPS Megabit Drive 2 for n > 2000000
2014-04-22: Checked to n = 2000000, David Metcalfe, released
2014-04-15: Found n = 1461697, David Metcalfe
2014-04-13: Reserved by David Metcalfe
2011-02-01: Checked to n = 1400000, RPS Drive 6, released
2008-09-27: Found n = 838101, Even Stokkedalen, RPS Drive 6
2008-07-28: Found n = 739321, David Metcalfe, RPS Drive 6
2008-07-19: Found n = 618293, Mark Jordan, RPS Drive 6
2008-06-28: Found n = 645401, Carlos Eduardo Pinho, RPS Drive 6
2008-06-22: Reserved by RPS Drive 6, for n > 600000
2006-05-31: Found n = 483153, Larry Soule, RPS Drive 2
2006-04-22: Found n = 379649, Larry Soule, RPS Drive 2
2006-03-28: Found n = 263093, Larry Soule, RPS Drive 2
2006-03-17: Reserved by RPS Drive 2, for n = 210000 - 600000
2005-01-12: Checked to n = 210000, Steven Harvey, released
2005-01-10: Reserved by Steven Harvey from n=200000
2000-03-28: Found n = 47877, Dirk Augustin
1999-09-23: Found n = 40429, Tom Kuechler