This past week, John Pace of Germantown, Tenn., made a massive discovery. He found the largest prime number known to humankind. It's more than 23 million digits long.

Luke Durant, a 36-year-old researcher who attended the Alabama School of Math and Science, has discovered the largest prime number known to mathematicians.

This past week, John Pace of Germantown, Tenn., made a massive discovery. He found the largest prime number known to humankind. It's more than 23 million digits long.

At 23,249,425 digits, the number, known as M77232917, is now the largest known prime. In 2016, I wrote the following article about the previous largest known prime, which is now the second largest ...

Largest known prime number found The Great Internet Mersenne Prime Search, a cooperative computing project, helps find a prime that has nearly 13 million digits.

NPR's Mike Pesca talks to Michael Shafer, a 26-year-old chemical engineering graduate student who just discovered the largest prime number known to man.

Largest known prime number found The Great Internet Mersenne Prime Search, a cooperative computing project, helps find a prime that has nearly 13 million digits.