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Search: id:A072599
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| A072599 |
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Numbers n such that (n!)^2 - p(n) is prime. |
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+0
2
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OFFSET
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1,1
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COMMENT
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Values associated with 16, 109, 116, and 232 certified prime with Primo. These primes have lengths 27, 353, 382, and 900 digits, respectively.
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EXAMPLE
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(5!)^2 - prime(5) = 120^2 - 11 = 14400 - 11 = 14389 is prime, so 5 is a term.
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PROGRAM
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(PARI) for(n=1, 800, if(isprime((n!)^2-prime(n)), print1(n, ", ")))
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CROSSREFS
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Cf. A064769 (n such that (n!)^2 + p(n) is prime).
Sequence in context: A052002 A070916 A078305 this_sequence A095138 A026475 A101747
Adjacent sequences: A072596 A072597 A072598 this_sequence A072600 A072601 A072602
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KEYWORD
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nonn
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AUTHOR
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Rick L. Shepherd (rshepherd2(AT)hotmail.com), Jun 25 2002
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