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A263562 Primes p such that for every k >= 1, p*2^k - 1 has a divisor in the set {3, 5, 13, 17, 97, 241, 257}. 2
1865978047, 1889699677, 2362339121, 3637126963, 11776639499, 19321614419, 20000692169, 20111311169, 20592473107, 20597584901, 21477425107, 23368396573, 23479945327, 25326720611, 26161244323, 27190405961, 27380064223, 27474950743, 31467088979 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

What is the smallest term of this sequence that belongs to A180247? Is it the smallest prime Brier number?

LINKS

Table of n, a(n) for n=1..19.

Chris Caldwell, The Prime Glossary, Riesel number

Carlos Rivera, Problem 52

CROSSREFS

Cf. A101036, A180247, A263560.

Subsequence of A263561.

Sequence in context: A325900 A251282 A015429 * A204813 A103752 A105383

Adjacent sequences:  A263559 A263560 A263561 * A263563 A263564 A263565

KEYWORD

nonn

AUTHOR

Arkadiusz Wesolowski, Oct 21 2015

STATUS

approved

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Last modified February 18 04:48 EST 2020. Contains 332011 sequences. (Running on oeis4.)