What is define prime?

A "prime" number is a positive integer greater than 1 that has no positive integer divisors other than 1 and itself. In other words, a prime number is only divisible by 1 and itself. The number 2 is the only even prime number, and all other prime numbers are odd. Prime numbers are important in mathematics and have numerous applications, particularly in cryptography and number theory. The distribution of prime numbers is a subject of ongoing research in mathematics.