World’s largest prime number takes 22.45 MB of memory in text form

48th Mersenne Prime - world's largest known prime number

Researchers have recently discovered the new prime number that is 17 million digits long. It is the world’s largest prime number discovered by Dr. Curtis Cooper at the University of Central Missouri.

The newly discovered prime number is 257,885,161 – 1. You can see the number Dr. Curtis Cooper. You will notice that the number takes 22.45 MB of memory in text form.


This number went up the recorded discovery of 243,112,609 – 1 in 2009 that has about 13-million-digits.

Cooper’s finding was the part of the Great Internet Mersenne Prime Search (GIMPS). It is a distributed computing project that searches for Mersenne primes, which are the numbers taken the form of 2p – 1, where p is the prime number. Only 48 Mersenne primes are known at this time.

This new finding is eligible for a Dr. Curtis Cooper but this number is nothing as compared to the $150,000 prize being offered by the Electronic Frontier Foundation for the discovery of 100 million digits prime. They also have a $250,000 prize for a prime of one billion digits.

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