Is 103 Prime?

A prime number is a natural number greater than 1 that has exactly two factors: 1 and itself.

To check if 103 is prime, we need to verify that no number from 2 to √103 divides it evenly.

Since 103 is odd, we only need to check odd divisors.

We only need to test up to √103 ≈ 10.15, which rounds down to 10.

If 103 has a factor larger than √103, it must also have a corresponding factor smaller than √103.

Testing: 3, 5, 7, ... up to 10

None of these numbers divide 103 evenly.

103 has no divisors between 2 and 10.

The only factors of 103 are 1 and 103 itself.

Therefore, 103 is a PRIME number!