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A065589 Smallest prime beginning with exactly n 6's. 3
2, 61, 661, 6661, 666607, 666667, 66666629, 66666667, 666666667, 6666666661, 66666666667, 6666666666629, 66666666666629, 666666666666631, 66666666666666047, 66666666666666601, 6666666666666666059 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

M. F. Hasler, Table of n, a(n) for n = 1..201

MATHEMATICA

Do[a = Table[6, {n}]; k = 0; While[b = FromDigits[ Join[a, IntegerDigits[k] ]]; First[ IntegerDigits[k]] == 6 || !PrimeQ[b], k++ ]; Print[b], {n, 1, 17} ]

CROSSREFS

Cf. A037065, A065584 - A065592.

Sequence in context: A172230 A059004 A037065 * A190681 A181005 A289644

Adjacent sequences:  A065586 A065587 A065588 * A065590 A065591 A065592

KEYWORD

nonn,base

AUTHOR

Robert G. Wilson v, Nov 28 2001

EXTENSIONS

Corrected by Don Reble, Jan 17 2007

STATUS

approved

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Last modified November 20 00:42 EST 2017. Contains 294957 sequences.