Prime Numbers

A prime number is a number greater than 1 that can only be divided by 1 and itself. In other words, it has exactly two distinct divisors: 1 and the number itself.

For example:

• 2 is a prime number because it can only be divided by 1 and 2.

• 3 is a prime number because it can only be divided by 1 and 3.

• 4 is NOT a prime number because it can be divided by 1, 2, and 4 (it has more than two divisors).

🧠 Key Points About Prime Numbers:

• The smallest prime number is 2, and it is the only even prime number.

• All other prime numbers are odd.

• The number 1 is not considered prime because it only has one divisor: itself.

Some examples of prime numbers are:
2, 3, 5, 7, 11, 13, 17, 19, 23, 29... and so on.

Prime numbers play a crucial role in mathematics, especially in number theory and cryptography, where they are used for creating secure systems.