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A280299
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Numbers with 71 divisors.
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6
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1180591620717411303424, 2503155504993241601315571986085849, 8470329472543003390683225006796419620513916015625, 143503601609868434285603076356671071740077383739246066639249, 7897469567994392174328988784504809847540729881935024059662581894710332201
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OFFSET
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1,1
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COMMENTS
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Also, 70th powers of primes.
More generally, the n-th number with p divisors is equal to the n-th prime raised to power p-1, where p is prime. In this case, p = 71.
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LINKS
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FORMULA
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EXAMPLE
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a(1) = 2^70, a(2) = 3^70, a(3) = 5^70, a(4) = 7^70, a(5) = 11^70.
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MATHEMATICA
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PROG
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(PARI) a(n)=prime(n)^70
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CROSSREFS
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Cf. A000005, A000040, A001248, A030514, A030516, A030629, A030631, A030635, A030637, A137486, A137492, A139571, A139572, A139573, A139574, A139575, A173533, A183062, A183085, A280298, A280301, A261700.
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KEYWORD
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nonn,easy
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AUTHOR
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STATUS
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approved
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