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A235150 Primes p such that (p reversed) + 9 is also a prime. 1
2, 23, 29, 41, 43, 47, 83, 89, 223, 239, 241, 257, 269, 271, 281, 293, 401, 443, 449, 461, 463, 467, 479, 811, 821, 823, 829, 839, 853, 859, 877, 881, 883, 887, 2003, 2027, 2039, 2053, 2081, 2089, 2113, 2129, 2131, 2137, 2161, 2179, 2221, 2237, 2251, 2269, 2281 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 1..1000

EXAMPLE

83 is in the sequence because 38+9=47 is prime.

MATHEMATICA

Select[Prime[Range[4000]], PrimeQ[FromDigits[Reverse[IntegerDigits[#]]] + 9]&]

PROG

(MAGMA) [p: p in PrimesUpTo(4000) | IsPrime(q+9) where q is Seqint(Reverse(Intseq(p)))];

CROSSREFS

Cf. A165446, A166501, A167460, A167466, A167473.

Sequence in context: A154758 A156614 A226016 * A114549 A235148 A208325

Adjacent sequences:  A235147 A235148 A235149 * A235151 A235152 A235153

KEYWORD

nonn,base

AUTHOR

Vincenzo Librandi, Jan 04 2014

STATUS

approved

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Last modified October 18 17:13 EDT 2019. Contains 328186 sequences. (Running on oeis4.)