14538...21793 (124-digits)

This number is a prime.

                 1453 8012859382 6227138338 8749203683 6112512911 8027271453
1073457948 5248779110 1921535994 7259898703 4259659851 7677405115 9531521793

The smallest prime formed from the reverse concatenation of the n-th powers of n consecutive primes, i.e., {283^n, 281^n, 277^n, 271^n, 269^n, 263^n, 257^n}, (case n=7). [Bajpai]