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 A243457 Primes p such that (p reversed)-2 is also a prime. 6
 5, 7, 13, 19, 31, 37, 127, 139, 151, 163, 181, 193, 307, 313, 331, 349, 367, 379, 547, 571, 577, 991, 997, 1009, 1033, 1051, 1117, 1123, 1129, 1171, 1201, 1213, 1231, 1249, 1279, 1297, 1321, 1327, 1399, 1429, 1453, 1459, 1489, 1543, 1567, 1579, 1597, 1609 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Vincenzo Librandi, Table of n, a(n) for n = 1..1000 MATHEMATICA Select[Prime[Range[2, 5000]], PrimeQ[FromDigits[Reverse[IntegerDigits[#]]] - 2] &] PROG (Magma) [p: p in PrimesInInterval(2, 2000) | IsPrime(q-2) where q is Seqint(Reverse(Intseq(p)))]; CROSSREFS Cf. Primes p such that (p reversed)-k is also a prime: A167216 (k=1), this sequence (k=2), A243458 (k=3), A167513 (k=4), A243459 (k=5), A167488 (k=6), A243460 (k=7), A167497 (k=8), A243461 (k=9), A167496 (k=10). Sequence in context: A099349 A167464 A280266 * A189441 A106986 A218011 Adjacent sequences: A243454 A243455 A243456 * A243458 A243459 A243460 KEYWORD nonn,base AUTHOR Vincenzo Librandi, Jun 05 2014 STATUS approved

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Last modified June 1 20:24 EDT 2023. Contains 363078 sequences. (Running on oeis4.)