A110714 Beginning with 2, concatenation of n successive numbers such that every partial concatenation is a prime.

2, 23, 91011, 34353637, 4344454647, 646566676869, 567891011, 10541055105610571058105910601061, 291292293294295296297298299, 130131132133134135136137138139, 811812813814815816817818819820821, 216621672168216921702171217221732174217521762177, 851852853854855856857858859860861862863, 8485868788899091929394959697, 285286287288289290291292293294295296297298299, 746747748749750751752753754755756757758759760761

Offset

1,1

Comments

The first 16 terms begin respectively with 2,2,9,34,43,64,5,1054,291,130,811,2166,851,84,285,746.

Links

Table of n, a(n) for n=1..16.

Example

2,223,22391011,2239101134353637 are all primes.

Crossrefs

Cf. A110715.

Sequence in context: A090511 A369993 A114256 * A067837 A358384 A334616

Adjacent sequences: A110711 A110712 A110713 * A110715 A110716 A110717

Keyword

base,nonn

Author

Amarnath Murthy, Aug 05 2005

Extensions

More terms from David Wasserman, Dec 12 2008

Status

approved