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Search: id:A139574
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| A139574 |
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Numbers with 43 divisors. |
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+0
2
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| 4398046511104, 109418989131512359209, 227373675443232059478759765625, 311973482284542371301330321821976049, 54763699237492901685126120802225273763666521, 61040881526285814362156628321386486455989674569
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OFFSET
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1,1
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COMMENT
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42nd powers of primes. The n-th number with p divisors is equal to the n-th prime raised to power p-1, where p is prime.
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LINKS
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O. E. Pol, Determinacion geometrica de los numeros primos y perfectos.
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FORMULA
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a(n)=A000040(n)^(43-1)=A000040(n)^42.
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CROSSREFS
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Cf. A000005, A000040, A001248, A030514, A030516, A030529, A030631, A030635, A030637, A137486, A137492, A139571, A139572, A139573, A139575.
Sequence in context: A082250 A080123 A013640 this_sequence A094910 A023051 A003826
Adjacent sequences: A139571 A139572 A139573 this_sequence A139575 A139576 A139577
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KEYWORD
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nonn
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AUTHOR
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Omar E. Pol (info(AT)polprimos.com), May 09 2008
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EXTENSIONS
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More terms from R. J. Mathar (mathar(AT)strw.leidenuniv.nl), May 11 2008
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