## Large non-Mersenne prime

### Problem 97

Published on Friday, 10th June 2005, 06:00 pm; Solved by 29657; Difficulty rating: 5%The first known prime found to exceed one million digits was discovered in 1999, and is a Mersenne prime of the form 2^{6972593}−1; it contains exactly 2,098,960 digits. Subsequently other Mersenne primes, of the form 2^{p}−1, have been found which contain more digits.

However, in 2004 there was found a massive non-Mersenne prime which contains 2,357,207 digits: 28433×2^{7830457}+1.

Find the last ten digits of this prime number.