35711...91391 (102-digits)
This number is a prime.
35 7113171913 2921373143 4743595167
6173797389 8791013017 0190131172 1131731931 9411517513 6176137197 1181191391
The smallest non-trivial prime formed from the concatenation of the digit reversal of the first n odd primes, i.e., {3, 5, 7, 11, 31, 71, ..., 181, 191, 391}, (case n=43). [Bajpai]
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell