A054261 Smallest number that contains the first n primes as substrings.

2, 23, 235, 2357, 112357, 113257, 1131725, 113171925, 1131719235, 113171923295, 113171923295, 1131719237295, 11317237294195, 1131723294194375, 113172329419437475, 1131723294194347537, 113172329419434753759

Offset: 1

Author

Patrick De Geest, Feb 15 2000

Keywords

• nonn
• base
• nice

Comments

The version that allows substrings to go from left to right or right to left is A240959. - Dmitry Kamenetsky, Oct 07 2015

Links

• Anders Kaseorg, Table of n, a(n) for n = 1..510
• Carlos Rivera, Puzzle 408. First primes embedded in the smallest number

Crossrefs

Cf. A054260, A035239, A240959.

Extensions

More terms from Naohiro Nomoto, Jul 26 2001