19981...01801 (36-digits)

This number is a prime.

                                     199811 1998891999 6160009160 0101601801

The smallest invertible prime that can be split into n consecutive n-digit invertible primes, i.e., {199811, 199889, 199961, 600091, 600101, 601801}, (case n=6). [Bajpai]