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 A271549 Primes p such that p+10^2, p+10^3, p+10^5, p+10^7, p+10^11, p+10^13 and p+10^17 are all prime. 0
 1399, 2157763, 13034041, 38208649, 38502313, 41518651, 42745111, 48154147, 49435063, 53872447, 58981513, 75194563, 83037247, 86139409, 101533963, 106287019, 140778403, 144593431, 155554237, 166083133, 166650193, 189371671, 199865893, 201738379, 224472877, 240133753, 271331773 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS The exponents of 10 are all prime (2,3,5,7,11,13,17). LINKS Table of n, a(n) for n=1..27. EXAMPLE p = 1399: p+10^2 = 1499 (is prime). p+10^3 = 2399 (is prime). p+10^5 = 101399 (is prime). p+10^7 = 10001399 (is prime). p+10^11 = 100000001399 (is prime). p+10^13 = 10000000001399 (is prime). p+10^17 = 100000000000001399 (is prime). MATHEMATICA Select[Prime[Range[10^9]], PrimeQ[# + 10^2] && PrimeQ[# + 10^3] && PrimeQ[# + 10^5] && PrimeQ[# + 10^7] && PrimeQ[# + 10^11] && PrimeQ[# + 10^13] && PrimeQ[# + 10^17] &] (* Robert Price, Apr 10 2016 *) PROG (PARI) lista(nn) = forprime(p=2, nn, if (isprime(p+10^2) && isprime(p+10^3) && isprime(p+10^5) && isprime(p+10^7) && isprime(p+10^11) && isprime(p+10^13) && isprime(p+10^17), print1(p, ", "))); \\ Altug Alkan, Apr 10 2016 CROSSREFS Cf. A000040, A002385, A015916, A023203, A271575. Sequence in context: A015990 A065214 A336738 * A203918 A178271 A271579 Adjacent sequences: A271546 A271547 A271548 * A271550 A271551 A271552 KEYWORD nonn AUTHOR Emre APARI, Apr 10 2016 EXTENSIONS More terms from Altug Alkan, Apr 10 2016 STATUS approved

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Last modified May 24 11:42 EDT 2024. Contains 372773 sequences. (Running on oeis4.)