A103171 Start of nine consecutive primes whose digit reversals are also prime.

1193, 1201, 7904639, 91528739, 91528777, 120890249, 154984343, 174625597, 302706311, 302706319, 312700789, 318629783, 707262887, 756791029, 777528457, 777528461, 778286917, 778286947, 923780981, 924408493, 924408497, 958610069

Offset: 1

Author

Labos Elemer, Jan 31 2005

Keywords

• base
• nonn

Comments

There are large gaps in this sequence because all terms begin with 1, 3, 7, or 9.

Examples

			1193, 1201, 1213, 1217, 1223, 1229, 1231, 1237 and 1249 are consecutive primes.
Their digit reversals, 3911, 1021, 3121, 7121, 3221, 9221, 1321, 7321 and 9421, are all prime.
		

Crossrefs

Cf. A007500, A103169, A103170, A103172.

Extensions

Edited by David Wasserman, Sep 05 2006