A075130 Primes with decimal representation 140{{0}10{9}89}.

140001089, 1401099989, 14000109989, 140108910989, 1401089109989, 14001089001089, 14010890109989, 140000010891089, 140000109999989, 140010890010989, 140010989001089, 140010989109989, 140108900109989

Offset

1,1

Comments

57 times one of these primes is a picture-perfect number (see A075131).

Links

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

Discussion forum, Systematic Undertaking to Find Picture-Perfect Numbers

Joseph Pe, Picture-Perfect Numbers and Other Digit-Reversal Diversions

Rulthan P. Sumicad, On the Picture-Perfect Number, J. Math. Stat. Studies (2023).

Example

a(4)=140108910989 because this is the 4th prime of the required form.

Crossrefs

A075131(n)=57*a(n)

Cf. A075131, A069942.

Sequence in context: A036744 A257643 A262532 * A202280 A034611 A207798

Adjacent sequences: A075127 A075128 A075129 * A075131 A075132 A075133

Keyword

base,nonn

Author

Jens Kruse Andersen, Sep 04 2002

Status

approved