A prime number is divisible by one and itself.

The prime numbers less than 30

2, 3, 5, 7, 11, 13, 17, 19, 23, 29

Example 1.

The prime number 2 is divisible by one and itself

2 ÷ 2 = 1

2 ÷ 1 = 2

2 ÷ 1 = 2

The prime number 2 is exactly divisible by 1 and 2.

See the definition of divisibility in math.

Example 2.

The prime number 29 is divisible by one and itself

29 ÷ 29 = 1

29 ÷ 1 = 29

29 ÷ 1 = 29

The prime number 29 is exactly divisible by 1 and 29.

Example 3.

The prime number 17 is divisible by one and itself

17 ÷ 17 = 1

17 ÷ 1 = 17

17 ÷ 1 = 17

The prime number 17 is exactly divisible by 1 and 17.

Example 4.

The prime number 181 is divisible by one and itself

181 ÷ 181 = 1

181 ÷ 1 = 181

181 ÷ 1 = 181

The prime number 181 is exactly divisible by 1 and 181.

Example 5.

The prime number 997 is divisible by one and itself

997 ÷ 997 = 1

997 ÷ 1 = 997

997 ÷ 1 = 997

The prime number 997 is exactly divisible by 1 and 997.