74620...98503 (26-digits)

This number is a prime.

                                                746209 5132435486 5576898503

The smallest prime P that can be expressed as the sum of seven consecutive primes each raised to power its previous prime: (5^3 + 7^5 + 11^7 + 13^11 + 17^13 + 19^17 + 23^19). Note that sod(P)=125 = 5^3, (cube of a prime). [Bajpai]