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A133282 Numbers k such that googol - k is an upper twin prime. 3
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

Cf. A001097, A001359, A006512, A133281.

Sequence in context: A031855 A186567 A235279 * A257724 A254016 A254023

Adjacent sequences:  A133279 A133280 A133281 * A133283 A133284 A133285

KEYWORD

nonn,fini

AUTHOR

Cino Hilliard, Oct 13 2007, Feb 06 2008

EXTENSIONS

More terms from Amiram Eldar, Dec 26 2019

STATUS

approved

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Last modified September 20 05:04 EDT 2021. Contains 347577 sequences. (Running on oeis4.)