Which Numbers Are Prime?

The first 10 prime numbers are 2, 3, 5, 7, 11, 13, 17, 19, 23, 29. There are 25 prime numbers between 1 and 100. Prime numbers can continue well past 100. For example, 21,577 is a prime number.

How do you know if a number is prime?

Every counting number greater than 1 is either a prime number or a composite number. A prime number has exactly two factors — 1 and the number itself. For example, the number 5 is prime because its only two factors are 1 and 5.

What are 10 prime numbers?

The first ten prime numbers are 2, 3, 5, 7, 11, 13, 17, 19, 23, and 29.

Marcus Vance

Marcus Vance

Cybersecurity & Digital Privacy Researcher

Marcus Vance is a cybersecurity auditor and technology writer dedicated to educating the public about online safety, data privacy regulations, enterprise security, and emerging cyber threats.