The year 2027 will be a prime number. This means that the number appears in more than 200 number sequences. Among other ...

Add Yahoo as a preferred source to see more of our stories on Google. Prime numbers are sometimes called math’s “atoms” because they can be divided by only themselves and 1. For two millennia, ...

A Missouri professor, one of a team of nearly 100,000 volunteers, has found a highly unusual 17 million digit number -- and brought a prime-hunting project closer to a $150,000 prize. Stephen ...

Editor's Note: Due to an editing error, an earlier version of this story omitted part of the calculation for the new prime number, correctly described below as 2 multiplied by itself 57,885,161 times ...

Meet the new largest known prime number. It starts with a 4, continues on for 23 million digits, then ends with a 1. As is true with all prime numbers, it can only be evenly divided by one and itself.

An integer greater than 1 that is not evenly divisible by any number other than itself, and, of course, 1. Prime numbers are considered a fundamental building block of numbers, especially number ...