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A101252
Primes that are a concatenation of 3, 5, 7 and a prime.
6
35729, 35731, 35747, 35753, 35759, 35771, 35797, 357103, 357107, 357109, 357131, 357139, 357179, 357197, 357199, 357211, 357229, 357239, 357241, 357263, 357271, 357281, 357283, 357293, 357347, 357349, 357353, 357359, 357389, 357421, 357431
OFFSET
1,1
LINKS
EXAMPLE
35729 is member as it is concatenated from the primes 3,5,7 and 29.
MATHEMATICA
Select[ Table[ FromDigits[ Flatten[ IntegerDigits /@ {3, 5, 7, Prime[n]}]], {n, 95}], PrimeQ[ # ] &] (* Robert G. Wilson v, Dec 20 2004 *)
CROSSREFS
KEYWORD
nonn,easy,base
AUTHOR
Parthasarathy Nambi, Dec 16 2004
EXTENSIONS
Extended by Ray Chandler and Robert G. Wilson v, Dec 22 2004
STATUS
approved