A101252 Primes that are a concatenation of 3, 5, 7 and a prime.

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

Author

Parthasarathy Nambi, Dec 16 2004

Keywords

• nonn
• easy
• base

Examples

			35729 is member as it is concatenated from the primes 3,5,7 and 29.
		

Links

• Daniel Starodubtsev, Table of n, a(n) for n = 1..10000
• Peter Alfeld, The 10,000 smallest prime numbers.

Crossrefs

Cf. A101218, A101219, A101249, A101250, A101251.

Programs

Mathematica

Select[ Table[ FromDigits[ Flatten[ IntegerDigits /@ {3, 5, 7, Prime[n]}]], {n, 95}], PrimeQ[ # ] &] (* Robert G. Wilson v, Dec 20 2004 *)

Extensions

Extended by Ray Chandler and Robert G. Wilson v, Dec 22 2004