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A103171
Start of nine consecutive primes whose digit reversals are also prime.
3
1193, 1201, 7904639, 91528739, 91528777, 120890249, 154984343, 174625597, 302706311, 302706319, 312700789, 318629783, 707262887, 756791029, 777528457, 777528461, 778286917, 778286947, 923780981, 924408493, 924408497, 958610069
OFFSET
1,1
COMMENTS
There are large gaps in this sequence because all terms begin with 1, 3, 7, or 9.
EXAMPLE
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
KEYWORD
base,nonn
AUTHOR
Labos Elemer, Jan 31 2005
EXTENSIONS
Edited by David Wasserman, Sep 05 2006
STATUS
approved