OFFSET
1,1
COMMENTS
These numbers are called Caesar primes because the birth date of Julius Caesar (July 13th) provides one example of such a number, i.e. p=7 and q=13 give the prime 13*10+7=137.
CROSSREFS
KEYWORD
nonn
AUTHOR
Tom Mueller (muel4503(AT)uni-trier.de), Dec 17 2007
STATUS
approved