This website is a semi-functional mirror of the original Project Euler. More information is available on GitHub.
Large non-Mersenne prime
Problem 97
Published on 10 June 2005 at 06:00 pm [Server Time]
The first known prime found to exceed one million digits was discovered in 1999, and is a Mersenne prime of the form 26972593−1; it contains exactly 2,098,960 digits. Subsequently other Mersenne primes, of the form 2p−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: 28433×27830457+1.
Find the last ten digits of this prime number.
Go to back to Problems