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A243588
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Primes p such that sum of digits + 9 is prime.
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2
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2, 11, 13, 17, 19, 31, 37, 53, 59, 71, 73, 101, 103, 107, 109, 127, 149, 163, 167, 181, 211, 233, 239, 251, 257, 271, 293, 307, 347, 383, 389, 419, 431, 433, 479, 491, 499, 503, 509, 521, 523, 541, 563, 569, 587, 613, 617, 631, 653, 659, 677, 701, 743
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OFFSET
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1,1
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LINKS
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MAPLE
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filter:= n -> isprime(convert(convert(n, base, 10), `+`)+9):
select(isprime and filter, [$1..1000]); # Robert Israel, Jun 08 2014
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MATHEMATICA
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Select[Prime[Range[200]], PrimeQ[Plus@@IntegerDigits[#] + 9] &]
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PROG
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(Magma) [p: p in PrimesUpTo(1500) | IsPrime(q) where q is 9+&+Intseq(p)];
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CROSSREFS
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Cf. similar sequences listed in A243586.
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KEYWORD
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nonn,base
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AUTHOR
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STATUS
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approved
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