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.

Numbers ending with 0, 2, 4, 6 and 8 are not prime numbers. (ii) Sum of all digits: If the above step fails then take the sum of the digits of the given number. If the sum of all digits is ...

The only even prime number is \({2}\). All other even numbers are divisible by \({2}\). The number \({1}\) is not prime because a prime number has exactly two factors and \({1}\) only has one factor.

If you do this with all numbers from 2 to 100, only prime numbers will remain. Sieving multiples of 2, 3, 5 and 7 leaves only the primes between 1 and 100. Courtesy of M.H. Weissman With eight ...

For those who don’t remember, prime numbers are the special numbers divisible only by 1 and themselves. 2, 3, 5 and 7 are all primes, while 4 (since it’s also divisible by 2) doesn’t make ...

The Gathering has a new card related to prime numbers. Now fans are trying to use it to tackle one of the biggest problems in mathematics ...

This means that there are no large areas in which there are no prime numbers at all, while others are full of them. You can also imagine this idea by thinking about the distribution of molecules ...

However, for Luke Durant, a 36-year-old former Nvidia programmer, prime numbers became an all-consuming passion. He devoted nearly one year and invested a considerable sum of his own money to ...

Prime numbers are all the rage these days. I can tell something’s up when random people start asking me about the randomness of primes—without even knowing that I’m a mathematician!

The only even prime number is \({2}\). All other even numbers are divisible by \({2}\). The number \({1}\) is not prime because a prime number has exactly two factors and \({1}\) only has one factor.