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A072366 Numbers x such that x + reverse of x is a prime. 6
1, 10, 100, 116, 118, 140, 142, 146, 158, 166, 170, 172, 178, 182, 188, 190, 196, 215, 217, 229, 239, 241, 245, 257, 265, 269, 271, 277, 281, 287, 295, 299, 314, 316, 328, 338, 340, 344, 356, 364, 368, 370, 376, 380, 386, 394, 398, 413, 415, 427, 437, 439 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
LINKS
EXAMPLE
116 is a term because 116+611=727 is a prime.
MATHEMATICA
Select[Range[1000], PrimeQ[ # + FromDigits[Reverse[IntegerDigits[ # ]]]] &] (* Tanya Khovanova, Jul 23 2007 *)
PROG
(PARI) isok(n) = isprime(n+subst(Polrev(digits(n)), x, 10)); \\ Michel Marcus, Nov 29 2014
CROSSREFS
Sequence in context: A167502 A135652 A035504 * A349316 A119082 A116143
KEYWORD
base,easy,nonn
AUTHOR
Shyam Sunder Gupta, Jul 18 2002
STATUS
approved

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Last modified March 19 03:33 EDT 2024. Contains 370952 sequences. (Running on oeis4.)