Riesel primes of the form 203•2ⁿ-1

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

Current data

`k` , `b` :	203 , 2
Count :	28
Nash :	1687
Max `n` :	2,800,000
Date :	2024-11-13
Reserved :	No Prime Left BehindNo Prime Left Behind/Reserved

2, 22, 82, 142, 190, 232, 314, 1682, 2302, 5598, 6632, 6720, 11080, 22094, 31310, 53088, 105890, 115350, 235480, 248862, 313474, 455190, 480918, 676032, 809848, 859602, 2222744, 2595752

2024-08-23: Found n = 2595752, Florian Piesker, NPLB K300 Drive 1
2024-05-10: Found n = 2222744, Florian Piesker, NPLB K300 Drive 1
2024-05-05: Reserved by NPLB K300 Drive 1 for n > 2200000
2022-03-09: Checked to n = 2222000, RPS Megabit Drive 3
2021-03-21: Checked n = 1 - 1000000, Gary Barnes, double check, results included
2014-05-30: Reserved by RPS Megabit Drive 3 for n > 1400000
2011-02-01: Checked to n = 1400000, RPS Drive 6, released
2008-10-20: Found n = 859602, David Metcalfe, RPS Drive 6
2008-09-19: Found n = 809848, Even Stokkedalen, RPS Drive 6
2008-07-16: Found n = 676032, Carlos Eduardo Pinho, RPS Drive 6
2008-06-22: Reserved by RPS Drive 6, for n > 600000
2006-12-16: Checked to n = 600000, RPS Drive 4, released
2006-09-08: Found n = 480918, Thomas Ritschel, RPS Drive 4
2006-08-31: Found n = 455190, Predrag Minovic, RPS Drive 4
2006-08-07: Found n = 313474, Thomas Ritschel, RPS Drive 4
2006-07-28: Reserved by RPS Drive 4, for n = 260000 - 600000
2004?: Checked to n = 250000, Mark Anderson, released
2004-08-09: Found n = 248862, Mark Anderson
2004-08-05: Found n = 235480, Mark Anderson
2004-06-04: Reserved by Mark Anderson, for n ≤ 250000