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Riesel primes of the form 421•2n-1

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Reserved! This sequence is currently part of Multi Reservation 8: NPLB Drive 17.

Current data

k , b : 421 , 2
Count : 36
Nash : 1823
Max n : 2,820,000
Date : 2024-03-09
Reserved : No Prime Left BehindNo Prime Left Behind/Reserved
7, 11, 13, 17, 19, 43, 73, 109, 119, 121, 139, 209, 227, 889, 1201, 1753, 1915, 2447, 3973, 6037, 7279, 12157, 13573, 14527, 18695, 20267, 27901, 29155, 41227, 136273, 147125, 227035, 403129, 595801, 696385, 706219

History