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Search: id:A125502
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| A125502 |
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(Product of successive primes minus 2) divided by 7 is prime. |
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+0
1
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| 4127, 49727, 212627, 565727, 697727, 1152227, 3102227, 3486227, 5742227, 7488227, 8078627, 8848127, 10837727, 14200127, 23041427, 41870627, 50437727, 59044127, 68766227, 70088927, 91008227, 115141727, 118573727, 122641427
(list; graph; listen)
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OFFSET
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1,1
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EXAMPLE
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167*173 = 28891, (8891-2)/7 = 4127 the first entry.
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PROGRAM
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(PARI) g(n, p) = { for(x=1, n, y=prime(x)*prime(x+1)-2; if(y%p==0, if(isprime(y/p), print1(y/p", ")))) }
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CROSSREFS
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Cf. A123921.
Sequence in context: A061325 A043677 A045032 this_sequence A015937 A117810 A162003
Adjacent sequences: A125499 A125500 A125501 this_sequence A125503 A125504 A125505
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KEYWORD
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easy,nonn
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AUTHOR
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Cino Hilliard (hillcino368(AT)hotmail.com), Dec 28 2006
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