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A336721
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Values k where A336719(k) increases.
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2
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2, 3, 5, 7, 13, 17, 19, 31, 49, 61, 83, 89, 107, 127, 167, 179, 197, 233, 241, 269, 281, 347, 373, 421, 443, 457, 487, 521, 607, 697, 769, 829, 881, 1049, 1063
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OFFSET
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1,1
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COMMENTS
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Also, values k (record positions) where A005420(k) reaches a new maximum. For the maximum itself, see A336720.
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LINKS
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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(k, ", ")))
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CROSSREFS
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KEYWORD
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nonn,hard,more
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AUTHOR
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STATUS
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approved
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