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Riesel numbers of the form k*4^n-1 with no prime value so far

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Riesel numbers k*4^n-1 where no prime values are known.

Table

There are 6 sequences in this Wiki:

k Nash Max n
9519 323 8388608
14361 408 5000000
79374 194 5000000
207894 462 5000000
308634 243 5000000
327006 323 5000000
Riesel primes