A prime number is a natural number greater than 1 that has exactly two positive divisors: 1 and itself. This means it cannot be formed by multiplying two smaller natural numbers. For example, 5 is prime because its only divisors are 1 and 5, whereas 4 is not prime because it can be divided evenly by 2 (2 × 2 = 4)
. Key points about prime numbers:
- They are greater than 1.
- They have no divisors other than 1 and the number itself.
- The number 1 is not considered prime because it has only one divisor.
- The number 2 is the only even prime number.
- Numbers with more than two divisors are called composite numbers
In summary, a prime number is a number that cannot be divided evenly by any other number except 1 and itself. Examples include 2, 3, 5, 7, 11, and so on
