A058994 - OEIS

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A058994

Numbers n such that 7^n reversed is prime.

1, 12, 24, 225, 392, 819, 1201, 1645, 1775 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,2`
	MATHEMATICA	`Do[ If[ PrimeQ[ ToExpression[ StringReverse[ ToString[7^n] ] ] ], Print[n] ], {n, 1, 2500} ]`
	CROSSREFS	`Cf. A057708.` `Sequence in context: A130163 A002167 A154268 * A138321 A198808 A033165` `Adjacent sequences: A058991 A058992 A058993 * A058995 A058996 A058997`
	KEYWORD	`nonn,base`
	AUTHOR	`Robert G. Wilson v (rgwv(AT)rgwv.com), Jan 17 2001`

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Last modified February 14 23:53 EST 2012. Contains 205689 sequences.