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A122119 Least prime factor of 2^(2^n)+5^(2^n). 0
7, 29, 641, 17, 97, 193, 274568286337, 257, 211457, 12289 (list; graph; refs; listen; history; internal format)
OFFSET

0,1

COMMENTS

Cf. A074600 2^n + 5^n, A094475 Primes of form 2^n+5^n.

CROSSREFS

Cf. A074600, A094475.

Sequence in context: A183434 A120789 A135629 * A157422 A061644 A053621

Adjacent sequences:  A122116 A122117 A122118 * A122120 A122121 A122122

KEYWORD

more,nonn

AUTHOR

Zak Seidov (zakseidov(AT)yahoo.com), Oct 19 2006

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Last modified February 16 10:07 EST 2012. Contains 205904 sequences.