Odd Prime Numbers

Introduction :

In mathematics, a prime number (or a prime) is a natural number that has exactly two distinct natural number divisors: 1 and itself.

The prime numbers are: 2, 3, 5, 7, 11…..

For example:

If x is a prime number then the factors of x must be 1 and x.

2 multiplied by 1 and 2 itself only so 2 is odd prime number.

Example for Odd Prime Numbers

Odd prime number problem: 1

Find the odd prime numbers from 2, 13, and 15

Solution:

Given that 2, 13, 15

Take 2

Calculate it must be multiply 1 and itself

2 x 1 = 2

1 x 2 = 2

So 2 is a odd prime number.

Take 13

Calculate it must be multiply 1 and itself

13 x 1 = 13

1 x 13 = 13

So 13 is a odd prime number.

Take 15

Calculate it must be multiply 1 and itself

15 x 1 = 15

1 x 15 = 15

5 x 3 = 15

3 x 5 = 15

So 15 is not a odd prime number.

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Example for Odd Prime Numbers:

Odd prime number problem: 2

Find the odd prime numbers from 25, 27, and 29

Take 25

Calculate it must be multiply 1 and itself

25 x 1 = 25

1 x 25 = 25

5 x 5 = 25

So 25 is not a odd prime number.

Take 27

Calculate it must be multiply 1 and itself

1 x 27 = 27

3 x 9 = 27

9 x 3 = 27

27 x 1 = 27

So 27 is not a odd prime number.

Take 29

Calculate it must be multiply 1 and itself

29 x 1 = 29

1 x 29 = 29

So 29 is a odd prime number.

Odd prime number problem: 3

Find the odd prime numbers from 53, 71, and 83

Take 53

Calculate it must be multiply 1 and itself

53 x 1 = 53

1 x 53 = 53

So 53 is a odd prime number.

Take 71

Calculate it must be multiply 1 and itself

71 x 1 = 71

1 x 71 = 71

So 71 is a odd prime number.

Take 83

Calculate it must be multiply 1 and itself

83 x 1 = 83

1 x 83 = 83

So 83 is a odd prime number.