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A068162 Smallest prime beginning and ending in at least n seven's. 1
727, 77377, 7772777, 777767777, 77777677777, 7777774777777, 777777727777777, 77777777677777777, 77777777704777777777, 777777777727777777777, 77777777777677777777777, 7777777777772777777777777, 777777777777757777777777777 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..13.

EXAMPLE

a(2) =77377 is a prime that starts with 77 and ends in 77, (two 7's).

CROSSREFS

Cf. A068160, A068161.

Sequence in context: A215158 A178654 A094733 * A321822 A056084 A191345

Adjacent sequences:  A068159 A068160 A068161 * A068163 A068164 A068165

KEYWORD

base,nonn

AUTHOR

Amarnath Murthy, Feb 24 2002

EXTENSIONS

More terms from Antonio G. Astudillo (afg_astudillo(AT)lycos.com), Apr 07 2003

STATUS

approved

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Last modified November 20 14:54 EST 2019. Contains 329337 sequences. (Running on oeis4.)