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A336720
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A336719 with duplicates removed.
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2
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3, 7, 31, 127, 8191, 131071, 524287, 2147483647, 4432676798593, 2305843009213693951, 57912614113275649087721, 618970019642690137449562111, 162259276829213363391578010288127, 170141183460469231731687303715884105727, 79638304766856507377778616296087448490695649
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OFFSET
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1,1
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COMMENTS
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Also, record values in A005420.
Mersenne primes (A000668) are a subsequence.
For the corresponding orders of 2 (exponents), see A336721.
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LINKS
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Table of n, a(n) for n=1..15.
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PROG
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(PARI) re=0; for(k=2, +oo, p=vecmax(factor(2^k-1)[, 1]); if(p>re, re=p; print1(re, ", ")))
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CROSSREFS
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Cf. A000668, A005420, A336719, A336721.
Sequence in context: A081093 A057612 A136005 * A183077 A088552 A000668
Adjacent sequences: A336717 A336718 A336719 * A336721 A336722 A336723
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KEYWORD
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nonn
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AUTHOR
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Jeppe Stig Nielsen, Aug 01 2020
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STATUS
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approved
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