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Riesel primes of the form 283•2^{n}1
Current data


History
 20220410: Checked to n = 8000000, Thomas Ritschel, released
 20210321: Checked n = 1  1000000, Gary Barnes, double check, results included
 20200622: Checked to n = 7000000, Thomas Ritschel
 20200119: Found n = 6804731, Thomas Ritschel
 20191217: Checked to n = 4000000, Thomas Ritschel
 20190429: Reserved by Thomas Ritschel for n ≥ 2000000
 20150213: Checked to n = 2000000, Thomas Ritschel, released
 20150213: Found n = 1879051, Thomas Ritschel
 20150131: Reserved by Thomas Ritschel for 1715000 < n < 2000000
 20100213: Checked to n = 1715000, Borys Jaworski, released
 20100209: Found n = 1702599, Borys Jaworski
 20100131: Checked to n = 1680000, Borys Jaworski
 20091231: Checked to n = 1610000, Borys Jaworski
 20091201: Checked to n = 1550000, Borys Jaworski
 20091031: Checked to n = 1470000, Borys Jaworski
 20090930: Checked to n = 1370000, Borys Jaworski
 20090831: Checked to n = 1300000, Borys Jaworski
 20090731: Checked to n = 1280000, Borys Jaworski
 20090630: Checked to n = 1250000, Borys Jaworski
 20090531: Checked to n = 1230000, Borys Jaworski
 20090430: Checked to n = 1210000, Borys Jaworski
 20090327: Checked to n = 1190000, Borys Jaworski
 20090226: Checked to n = 1170000, Borys Jaworski
 20090129: Checked to n = 1140000, Borys Jaworski
 20090109: Checked to n = 1130000, Borys Jaworski
 20080706: Checked to n = 920000, Borys Jaworski
 20080301: Checked to n = 740000, Borys Jaworski
 20080209: Checked to n = 700000, Borys Jaworski
 20080203: Checked to n = 690000, Borys Jaworski
 20080112: Checked to n = 650000, Borys Jaworski
 20080106: Checked to n = 640000, Borys Jaworski
 20071001: Reserved by Borys Jaworski
 20061216: Checked to n = 600000, RPS Drive 4, released
 20060728: Reserved by RPS Drive 4, for n = 260000  600000
 20040205: Found n = 149351, Steven Harvey
 20030529: Found n = 123975, Steven Harvey
 19990711: Found n = 31199, Tom Kuechler