A115983 Apocalypse primes: 10^665+a(n) has 666 decimal digits and is prime.

123, 1837, 6409, 7329, 8569, 8967, 9663, 13213, 14943, 16299, 17053, 17857, 22611, 24601, 25261, 25729, 27847, 30567, 32413, 33321, 33379, 34257, 34557, 34723, 38097, 39387, 39787, 39889, 39973, 43501, 43719, 44889, 48139, 49587, 53683

Offset: 1

Author

Eric W. Weisstein, Feb 09 2006

Keywords

• base
• dumb
• fini
• nonn

Comments

This sequence contains about 10^662 terms, the last of which is 10^666-1157.

Links

• Robert G. Wilson v, Table of n, a(n) for n = 1..6666
• Brady Haran and Tony Padilla, Interesting 666-digit Numbers, YouTube Numberphile video, 2024.
• Eric Weisstein's World of Mathematics, Apocalypse Number

Programs

Mathematica

lst={};a=10^665;Do[If[PrimeQ[a+n], Print[n];AppendTo[lst, n]], {n, 8!}];lst (* Vladimir Joseph Stephan Orlovsky, Aug 30 2008 *)
Select[Range[55000],IntegerLength[10^665+#]==666&&PrimeQ[10^665+#]&] (* Harvey P. Dale, Jul 30 2019 *)