A133282 - OEIS

A133282

Numbers k such that googol - k is an upper twin prime.

35217, 85077, 253407, 326271, 343131, 349527, 356667, 408609, 471729, 517707, 582069, 613299, 614997, 661947, 667827, 793359, 810099, 852579, 876687, 960897, 1006041, 1023807, 1076211, 1089411, 1102461, 1179807, 1264467, 1355997, 1384617, 1649049, 1652127, 1661799

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

Googol = 10^100.

LINKS

Amiram Eldar, Table of n, a(n) for n = 1..1000

MATHEMATICA

Select[Range[10^6], And @@ PrimeQ[10^100 - # - {0, 2}] &] (* Amiram Eldar, Dec 26 2019 *)

PROG

(PARI) googol2(n) = { local(x, a, j); x=10^100; forstep(j=1, 1000000, 2, a=x-j; if(ispseudoprime(a)&ispseudoprime(a-2), print1(j", "); ); ) }

CROSSREFS