login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

A103172
Start of ten consecutive primes whose digit reversals are also prime.
5
1193, 91528739, 302706311, 777528457, 778286917, 924408493, 1177842077, 1477271183, 1477271249, 1801280717, 1811906567, 7060718569, 9338212141, 9387802769, 9387802807, 9387802817, 9427522387, 9427522409, 9944534927
OFFSET
1,1
EXAMPLE
1193, 1201, 1213, 1217, 1223, 1229, 1231, 1237, 1249 and 1259 are consecutive primes.
Their digit reversals, 3911, 1021, 3121, 7121, 3221, 9221, 1321, 7321, 9421 and 9521, are all prime.
CROSSREFS
KEYWORD
base,nonn
AUTHOR
Labos Elemer, Jan 31 2005
EXTENSIONS
Edited and extended by David Wasserman, Sep 05 2006
Corrected by Farideh Firoozbakht, Sep 23 2009
STATUS
approved