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Search: id:A096649
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| A096649 |
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First occurrence where n# - p is a prime for primes p = 3,5,... |
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+0
1
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| 3, 23, 199, 2297, 30013, 510481, 9699667, 223092827, 6469693189, 200560490057, 7420738134751, 304250263527163, 13082761331669941, 614889782588491343, 32589158477190044657, 117288381359406970983181
(list; graph; listen)
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OFFSET
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2,1
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FORMULA
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n# is n primorial = product of primes 2*3*5*...*p<=n
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EXAMPLE
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5# = 2*3*5 = 30. 30-3 = 27,30-5=25,30-7 = 23 prime
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PROGRAM
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(PARI) pr=1; forprime(x=2, n, pr*=x; forprime(m=2, n, y=pr-m; if(isprime(y), print1(y", "); break)))
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CROSSREFS
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Sequence in context: A074579 A060880 A093155 this_sequence A135423 A114017 A068691
Adjacent sequences: A096646 A096647 A096648 this_sequence A096650 A096651 A096652
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KEYWORD
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nonn
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AUTHOR
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Cino Hilliard (hillcino368(AT)gmail.com), Aug 22 2004
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