A089923 Duplicate of A100003.

5, 17, 89, 383

Offset: 5

Author

Cino Hilliard, Jan 11 2004

Keywords

• dead

Comments

Previous name: Largest prime in the reverse concatenation of the first n consecutive prime numbers when that concatenation is a prime.

Examples

			53 is the reverse concatenation of the consecutive primes 3 and 5. 53 is prime.
		

Programs

PARI

revprime2(n) = { y=3; forprime(x=5,n, y=concat(Str(x),Str(y)); z=eval(y); if(ispseudoprime(z),print(x","z)) ) }

Extensions

Edited by T. D. Noe, Oct 30 2008