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A070024 First prime > 10^n in which every substring of length n is prime. 1
23, 113, 1013, 10139, 100379, 1000037, 10000379, 100000193, 1000001237, 10000000097, 100000000193, 1000000000193, 10000000001777, 100000000001831, 1000000000036931, 10000000000001873, 100000000000000691 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..17.

MATHEMATICA

Do[k = 10^n; While[ !PrimeQ[k] || Union[ PrimeQ[ Map[ FromDigits, Partition[ IntegerDigits[k], n, 1]]]] != {True}, k++ ]; Print[k], {n, 1, 25}]

CROSSREFS

Cf. A019546, A069488, A069489 & A070025.

Cf. A179335. [From Reinhard Zumkeller, Jul 11 2010]

Sequence in context: A142324 A233362 A288751 * A111943 A057877 A302530

Adjacent sequences:  A070021 A070022 A070023 * A070025 A070026 A070027

KEYWORD

base,nonn

AUTHOR

Robert G. Wilson v, Apr 12 2002

STATUS

approved

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Last modified April 23 14:15 EDT 2019. Contains 322386 sequences. (Running on oeis4.)