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A118571
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Sophie Germain primes whose sum of digits is a prime.
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2
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2, 3, 5, 11, 23, 29, 41, 83, 89, 113, 131, 173, 179, 191, 281, 359, 443, 593, 641, 683, 719, 809, 911, 953, 1013, 1019, 1031, 1103, 1439, 1451, 1499, 1583, 1811, 1901, 2003, 2063, 2069, 2339, 2351, 2393, 2399, 2753, 2939, 3299, 3329, 3389, 3413, 3491, 3761
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OFFSET
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1,1
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LINKS
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EXAMPLE
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191 is in the sequence because it is a Sophie Germain prime and the sum of its digits 1+9+1 = 11 is a prime.
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MATHEMATICA
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Select[Range[4000], PrimeQ[#] && PrimeQ[2*# + 1] && PrimeQ[Plus @@ IntegerDigits[#]] &] (* Amiram Eldar, Feb 08 2021 *)
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CROSSREFS
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KEYWORD
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base,nonn
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AUTHOR
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Luc Stevens (lms022(AT)yahoo.com), May 07 2006
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STATUS
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approved
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