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Search: id:A108280
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| A108280 |
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Consider primes p and q such that p = 2^k + 27 and q = 2^(k+1) + 27 for some k; sequence gives values of p. |
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| 29, 43, 8219, 1099511627803, 10889035741470030830827987437816582766619
(list; graph; listen)
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OFFSET
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0,1
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COMMENT
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It appears that these values are merely conjectures. - N. J. A. Sloane (njas(AT)research.att.com), Jun 30 2005
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PROGRAM
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(PARI) g(m, n, b) = { for(x=0, n, y=m+b^x+b%2; z=m+b^(x+1)+b%2; if(isprime(y)&isprime(z), print1(y", ") ) ) }
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CROSSREFS
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Sequence in context: A043951 A042973 A020997 this_sequence A077782 A059414 A110054
Adjacent sequences: A108277 A108278 A108279 this_sequence A108281 A108282 A108283
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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), Jun 29 2005
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