Riesel primes of the form 305•2ⁿ-1

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

Current data

`k` , `b` :	305 , {{{Rb}}}
Count :	15
Nash :	809
Max `n` :	2,800,000
Date :	2024-11-13
Reserved :	No Prime Left BehindNo Prime Left Behind/Reserved

8, 14, 30, 78, 86, 240, 842, 8430, 41982, 48038, 86934, 104646, 115782, 662808, 2358854

[[Category:Riesel {{{Rb}}}|#.....00305]][[Category:Riesel {{{Rb}}} Low-weight|#.....00305]]

2018-02-27: Found n = 2358854, Ricky L. Hubbard
2014-12-29: Reserved by NPLB Drive 15, for n=2000000<n<3000000
2012-10-10: Checked to n = 1300000, Gary Barnes, double-checked, released
2012-09-25: Reserved by Gary Barnes, for 1000000<n<1300000
2012-04: Checked to n = 2000000, Dmitry Domanov
2010-06-26: Reserved by Dmitry Domanov
2009-01-01: Checked to n = 1000000, Carlos Eduardo Pinho, released, results not available anymore
2008-12-27: Checked to n = 900000, Carlos Eduardo Pinho, results not available anymore
2008-11-10: Checked to n = 600000, NPLB Drive 3, released
2008-10-16: Checked to n = 800000, Carlos Eduardo Pinho, results not available anymore
2008-10-09: Reserved by Carlos Eduardo Pinho, for 700000<n<1000000
2008-08-26: Checked to n = 700000, Carlos Eduardo Pinho, released
2008-08-03: Found n = 662808, Carlos Eduardo Pinho
2008-08-04: Checked to n = 700000, Carlos Eduardo Pinho, results included
2008-08-02: Reserved by Carlos Eduardo Pinho, for 600000<n<1000000
2008-03-01: Reserved by NPLB Drive 3, for 260000<n<600000
2001-12-31: Found n = 115782, James S. Griffin
2001-12-31: Found n = 104646, James S. Griffin
2001-07-23: Found n = 86934, Sander Hoogendoorn