A131316 - OEIS

A131316

Smallest prime beginning with exactly n identical digits.

2, 11, 1117, 11113, 111119, 3333331, 11111117, 111111113, 4444444447, 11111111113, 444444444443, 5555555555551, 22222222222229, 222222222222227, 11111111111111101, 11111111111111119, 222222222222222221, 8888888888888888881, 1111111111111111111

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OFFSET

1,1

LINKS

Alois P. Heinz, Table of n, a(n) for n = 1..200

EXAMPLE

a(4) = 11113 because 11113 is the smallest prime beginning with exactly 4 identical digits.

a(18) = 8888888888888888881 > a(19) = 1111111111111111111, which begins with exactly 19 identical digits. - Alois P. Heinz, Sep 05 2011

CROSSREFS

Different from A034388.

Sequence in context: A306909 A084673 A034388 * A062636 A343900 A343929

Adjacent sequences: A131313 A131314 A131315 * A131317 A131318 A131319

KEYWORD

base,nonn

AUTHOR

Shyam Sunder Gupta, Sep 29 2007

EXTENSIONS

More terms from Alois P. Heinz, Sep 05 2011

STATUS

approved