Riesel primes of the form 31873•2n-1

Reserved! This sequence is currently part of Multi Reservation 2: RPS Drive 10.

Current data

k , b : 31873 , 2 Type : Low Count : 8 Nash : 264 Max n : 1,330,000 Date : 2020-02-14 Reserved : Riesel Prime SearchRiesel Prime Search/Reserved

15, 63, 79, 87, 31207, 35527, 54175, 310983

History

• 2021-07-20: Checked n = 375000 - 400000, Alexander Jones
• 2021-06-01: Checked n = 350000 - 375000, Alexander Jones
• 2021-01-13: Checked n = 325000 - 350000, Alexander Jones
• 2020-10-01: Checked n = 300000 - 325000, Alexander Jones
• 2018-10-31: Checked n = 1000 - 300000, Alexander Jones
• 2011-11-23: Checked to n = 1007, Gary Barnes
• 2009-05-12: Reserved by RPS Drive 10, for n = 400000 - 2000000