What is is 23 a prime number?

Yes, 23 is a prime number.

• A prime number is a whole number greater than 1 that has only two divisors: 1 and itself.
• 23 is only divisible by 1 and 23. Therefore, it fits the definition of a prime number.
• 23 is not divisible by any other integers greater than 1 and less than 23.