There is no formal concept or definition of "primal numbers" in mathematics. It is possible that you meant to refer to "prime numbers." Prime numbers are positive integers greater than 1 that have no divisors other than 1 and themselves. Examples of prime numbers include 2, 3, 5, 7, 11, and so on.
I believe you meant to ask about prime numbers. Prime numbers are a type of whole number greater than 1 that has no divisors other than 1 and itself. In other words, they cannot be divided evenly by any other number except for 1 and the number itself. For example, 2, 3, 5, 7, 11, and 13 are all prime numbers because they cannot be divided evenly by any number other than 1 and themselves. The list of prime numbers extends infinitely and they play a vital role in number theory and cryptography.
