A101250 Primes that are a concatenation of 7, 11 and a prime.

71119, 71129, 71143, 71147, 71153, 71161, 71167, 71171, 711131, 711163, 711173, 711181, 711223, 711307, 711317, 711353, 711397, 711409, 711463, 711479, 711499, 711509, 711523, 711563, 711577, 711617, 711653, 711691, 711701, 711709, 711727

Offset: 1

Author

Parthasarathy Nambi, Dec 16 2004

Keywords

• nonn
• easy
• base

Examples

			71119 is a prime concatenated from the primes 7, 11 and 19.
		

Links

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

Crossrefs

Cf. A100607, A101218, A101219, A101249, A101251, A101252.

Programs

Mathematica

Select[ Table[ FromDigits[ Flatten[ IntegerDigits /@ {7, 11, Prime[n]}]], {n, 130}], PrimeQ[ # ] &] (* Robert G. Wilson v, Dec 20 2004 *)

Extensions

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