OFFSET
1,1
COMMENTS
Primes of this form are rare. 2 and 5 are the only beginning numbers less than 100 that form more than 2 primes for all ending numbers less than 1000.
EXAMPLE
The 2nd entry forms the number 567891011121314151617 which is prime.
PROG
(PARI) consecprimes(n, m) = { local(a, x, y); a=""; for(x=m, n, a=concat(a, Str(x)); y=eval(a); if(ispseudoprime(y), print(x", "y) ) ) }
CROSSREFS
KEYWORD
more,nonn,base
AUTHOR
Cino Hilliard, Apr 19 2007
EXTENSIONS
Edited by Charles R Greathouse IV, Apr 25 2010
STATUS
approved