The world’s largest known prime number has been adjusted upwards to a numeral with 24,862,048 digits. That’s over one and a half million digits larger than the previous record.

Prime numbers are any number divisible only by one and by itself such as 2, 3, 5, 7, 11, etc. Mathematicians cannot resist finding ever bigger ones. The latest discovery was made by Patrick Laroche.

GIMPS’ next major goal is to find a 100-million-digit prime number.

Useless as they may seem, prime numbers have been used to create important cryptography algorithms.