While I was looking for a gift for a child’s birthday, a math book fell into my hands. I am always fascinated when authors write about abstract scientific topics for children, whether it’s on Albert ...

Image made with elements from Canva. Let’s go back to grade school—do you remember learning about prime numbers? They’re numbers that can only be divided by themselves and one. So 2, 3, 5, 7, 11, and ...

A prime number is a whole number, greater than 1, that only has two factors. A factor is a number that divides another number evenly, with no remainder or decimal. The factors of a prime number are ...

A prime number is an integer, or whole number, that has only two factors — 1 and itself. Put another way, a prime number can be divided evenly only by 1 and by itself. Prime numbers also must be ...

Is 170,141,183,460,469,231,731,687,303,715,884,105,727 prime? Before you ask the Internet for an answer, can you consider how you might answer that question without a ...

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.

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. For many people ...

A prime number is a whole number, greater than 1, that only has two factors. A factor is a number that divides another number evenly, with no remainder or decimal. The factors of a prime number are ...