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

1,1

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.

Sequence in context: A091762 A309706 A240959 * A019518 A048677 A132933

Adjacent sequences: A054258 A054259 A054260 * A054262 A054263 A054264

Keyword

nonn,base,nice

Author

Patrick De Geest, Feb 15 2000

Extensions

More terms from Naohiro Nomoto, Jul 26 2001

Status

approved