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Riesel primes of the form 221•2n-1

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

Current data

k , b : 221 , 2
Type : Low
Count : 13
Nash : 418
Max n : 2,700,000
Date : 2024-10-04
Reserved : No Prime Left BehindNo Prime Left Behind/Reserved
2, 6, 42, 354, 402, 914, 1562, 10382, 34986, 81042, 104846, 730986, 749166

History