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A158318
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Primes p such that 5p-2 is prime.
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7
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3, 5, 11, 17, 23, 47, 53, 59, 71, 89, 101, 113, 131, 137, 149, 173, 191, 197, 233, 239, 257, 311, 317, 347, 383, 401, 431, 443, 449, 467, 479, 509, 569, 593, 617, 641, 683, 719, 761, 773, 827, 857, 929, 941, 947, 1031, 1061, 1097, 1163, 1181, 1223, 1229
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OFFSET
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1,1
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COMMENTS
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LINKS
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MATHEMATICA
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Select[Prime[Range[300]], PrimeQ[5#-2]&] (* Harvey P. Dale, Apr 10 2015 *)
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PROG
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(PARI) isok(p) = isprime(p) && isprime(5*p-2); \\ Michel Marcus, Oct 16 2013
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CROSSREFS
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Cf. A043326 Numbers n such that n is a product of two different primes and n-2 is prime, A062721 Numbers n such that n is a product of two primes and n-2 is prime, A157931 Numbers that are both the sum and the product of two primes.
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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