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Riesel primes of the form 19413•2ⁿ-1

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Current data

`k` , `b` :	19413 , 2
Type :	3
Count :	21
Nash :	1443
Max `n` :	725,000
Date :	2023-04-12

3, 7, 27, 75, 87, 127, 186, 315, 415, 487, 1590, 2175, 3162, 5766, 49482, 53883, 101787, 176623, 222075, 362667, 724320^[1]

Remarks :

For additional n ≡ 0 mod 4 history, see Conjectures 'R Us search at Riesel 19413•16ⁿ-1.

Notes

↑ Riesel 19413•16¹⁸¹⁰⁸⁰-1

History

2023-04-12: Checked to n = 800000, Karsten Bonath, only n ≡ 0 mod 4
2023-04-09: Checked to n = 725000, Alexander Jones, released
2023-03-23: Checked to n = 600000, Alexander Jones
2022-03-20: Checked to n = 500000, Alexander Jones
2022-02-27: Reserved by Alexander Jones
2021-12-30: Checked to n = 150000, Alexander Jones
2021-11-10: Checked to n = 100000, Alexander Jones
2020-08-29: Checked to n = 50000, Alexander Jones
2011-11-23: Checked to n = 1007, Gary Barnes
2009-01-13: Found n = 724320, Max Dettweiler, CRUS Drive 2

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