OFFSET
1,1
EXAMPLE
a(3) = 442619, since 442619, 442633 and 442691 are three consecutive primes with product of digits as 1728 and this is the first occurrence of three consecutive primes whose product of digits is equal and nonzero.
CROSSREFS
KEYWORD
base,more,nonn
AUTHOR
Shyam Sunder Gupta, Oct 08 2013
EXTENSIONS
a(5)-a(6) from Giovanni Resta, Oct 08 2013
STATUS
approved