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Search: id:A082952
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| A082952 |
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Smaller of the two factors of the n-th semiprime number of the form m!+1. |
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+0
4
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| 5, 11, 7, 71, 61, 11, 83, 23, 71, 20639383, 811, 401, 1697, 29, 67411, 14029308060317546154181, 12893, 12318573951317236818169524329, 79, 16567, 6653, 293, 229758023927584562777368125832724248866067995638905559798117
(list; graph; listen)
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OFFSET
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1,1
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LINKS
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Paul Leyland, Tables of factors of N!+1 and N!-1.
Hisanori Mishima, n! + 1 (n = 1 to 100).
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FORMULA
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Numbers p such that p*q=A078778(n)!+1, p, q prime, p<q
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EXAMPLE
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a(3)=7 because A078778(3)!+1=6!+1=721=7*103
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CROSSREFS
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Cf. A046315, A078778, A002981, A080802.
Adjacent sequences: A082949 A082950 A082951 this_sequence A082953 A082954 A082955
Sequence in context: A079778 A088213 A068419 this_sequence A113964 A075261 A112956
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KEYWORD
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nonn
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AUTHOR
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Hugo Pfoertner (hugo(AT)pfoertner.org), May 26 2003
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