A110435 Beginning with 11, least number such that every partial concatenation is a prime.

11, 3, 11, 1, 3, 3, 53, 13, 39, 9, 3, 21, 53, 79, 11, 19, 59, 27, 49, 21, 23, 211, 153, 189, 3, 161, 121, 167, 183, 193, 77, 21, 349, 107, 129, 343, 119, 241, 143, 37, 77, 31, 159, 183, 531, 1517, 7, 59, 159, 123, 9, 1513, 203, 343, 59, 9, 999

Offset

1,1

Comments

As n tends to infinity, does everyy term in A045572 arise infinitely many often and with same frequency? - Stefan Steinerberger, Feb 05 2006

Links

Table of n, a(n) for n=1..57.

Formula

a(n)=A092528(n+1), n>1. [From R. J. Mathar, Aug 18 2008]

Example

11,113,11311,113111,1131113,11311133 are all prime.

Crossrefs

Sequence in context: A083968 A082769 A194706 * A110774 A261411 A067063

Adjacent sequences: A110432 A110433 A110434 * A110436 A110437 A110438

Keyword

base,nonn

Author

Amarnath Murthy, Aug 03 2005

Extensions

More terms from Stefan Steinerberger, Feb 05 2006

Status

approved