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Search: id:A110464
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| A110464 |
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Odd colossally abundant numbers. |
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+0
3
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| 3, 15, 45, 315, 3465, 45045, 135135, 675675, 11486475, 218243025, 5019589575, 145568097675, 4512611027925, 31588277195475, 94764831586425, 3506298768697725, 143758249516606725, 6181604729214089175
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OFFSET
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1,1
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COMMENT
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The usual colossally abundant numbers (CANs) are defined in A004490. Odd CANs are defined similarly, except only odd primes are allowed in the factorization. It is conjectured that the ratio of consecutive odd CANs is always a prime number. The sequence of those prime numbers is given in A110465.
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CROSSREFS
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Adjacent sequences: A110461 A110462 A110463 this_sequence A110465 A110466 A110467
Sequence in context: A005560 A100747 A100737 this_sequence A088108 A135622 A061316
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KEYWORD
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nonn
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AUTHOR
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T. D. Noe (noe(AT)sspectra.com), Jul 21 2005
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