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A110714
Beginning with 2, concatenation of n successive numbers such that every partial concatenation is a prime.
7
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.
EXAMPLE
2,223,22391011,2239101134353637 are all primes.
CROSSREFS
Cf. A110715.
Sequence in context: A090511 A369993 A114256 * A067837 A358384 A334616
KEYWORD
base,nonn
AUTHOR
Amarnath Murthy, Aug 05 2005
EXTENSIONS
More terms from David Wasserman, Dec 12 2008
STATUS
approved