A090231 Largest prime as a concatenation in decreasing order of primes starting with prime(n).

2, 3, 53, 7, 11, 13, 171311753, 19, 23, 292319, 31, 3731292319, 41, 4341373129, 47, 5347, 5953474341373129, 615953474341, 6761, 71, 7371676159, 797371676159, 837973716761, 8983797371676159534743413731292319171311753, 97, 101

Offset

1,1

Links

Table of n, a(n) for n=1..26.

Example

a(3) = 53 as 532 is not a prime.

Crossrefs

Sequence in context: A371262 A193332 A192182 * A202701 A342408 A062641

Adjacent sequences: A090228 A090229 A090230 * A090232 A090233 A090234

Keyword

base,nonn

Author

Amarnath Murthy, Nov 26 2003

Extensions

More terms from David Wasserman, Oct 20 2005

Status

approved