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Riesel primes of the form 387•2ⁿ-1

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Current data

`k` , `b` :	387 , 2
Type :	3
Count :	37
Nash :	1853
Max `n` :	2,000,000
Date :	2014-12-28

1, 6, 16, 21, 28^[1], 36, 40, 81, 88^[2], 93, 97, 153, 165, 213, 612, 852, 877, 1053, 1158, 1437, 2653, 2968, 3060, 3286, 5001, 8061, 9046, 39313, 101868, 125985, 140437, 161646, 633582, 782853, 1709440, 1732185, 1793857

Notes

↑ Twin n=28
↑ Twin n=88

History

2014-12-28: Checked to n = 2000000, NPLB Maxi Drive 1, released
2014-10-19: Found n = 1793857, Göran Schmidt
2014-09-24: Found n = 1732185, Lennart Vogel
2014-09-16: Found n = 1709440, Timothy Sorbera
2014-08-20: Reserved by NPLB Maxi Drive 1, for 1610000<n<2000000
2013-04-28: Reserved by NPLB Maxi Drive 1, for 1300000<n<2000000
2013-01-14: Reserved by NPLB Maxi Drive 1, for 1000000<n<1300000
2009-01-01: Checked to n = 1000000, Ian M. Gunn, released
2008-12-26: Found n = 782853, Ian M. Gunn
2008-12-16: Checked to n = 700000, Ian M. Gunn
2008-12-07: Found n = 633582, Ian M. Gunn
2008-12-03: Checked to n = 640000, Ian M. Gunn
2008-11-19: Reserved by Ian M. Gunn, for n=600000<n<1000000
2008-11-10: Checked to n = 600000, NPLB Drive 3, released
2008-03-01: Reserved by NPLB Drive 3, for 260000<n<600000
2002-04-17: Found n = 161646, Andrew J. Rupinski
2002-04-17: Found n = 140437, Andrew J. Rupinski
2002-04-17: Found n = 125985, Andrew J. Rupinski
2002-04-17: Found n = 101868, Andrew J. Rupinski
1998-11-03: Found n = 39313, Kimmo Herranen

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