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A200861 Prime factors of 10^100 - 1. 2
3, 3, 11, 41, 101, 251, 271, 3541, 5051, 9091, 21401, 25601, 27961, 60101, 7019801, 182521213001, 14103673319201, 78875943472201, 1680588011350901 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Is this sequence the same as "Primes p such that 10^p - 1 divides 10^(10^100) - 10"?

LINKS

Table of n, a(n) for n=1..19.

Dario A. Alpern, Known prime factors of Googolplex - 10

Eric Weisstein's World of Mathematics, Googol

MATHEMATICA

Join[{3}, Transpose[FactorInteger[10^100 - 1]][[1]]]

CROSSREFS

Subsequence of A178070 except for 3.

Sequence in context: A109937 A054101 A176956 * A113892 A334283 A078225

Adjacent sequences:  A200858 A200859 A200860 * A200862 A200863 A200864

KEYWORD

fini,full,nonn

AUTHOR

Arkadiusz Wesolowski, Nov 23 2011

EXTENSIONS

Name changed by T. D. Noe and Arkadiusz Wesolowski, Nov 29 2011

STATUS

approved

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Last modified June 24 06:17 EDT 2021. Contains 345416 sequences. (Running on oeis4.)