The prime factor of the number 28 is 2(2) and 7.
2X2X7 are prime numbers.
The prime factor of the number 40 is 2(3) and 5.
2 x 2 x 2 x 5 are prime numbers
The prime factor of the number 42 is 2 and 3 and 7.
2 x 3 x 7 are prime numbers.
2X2X7 are prime numbers.
The prime factor of the number 40 is 2(3) and 5.
2 x 2 x 2 x 5 are prime numbers
The prime factor of the number 42 is 2 and 3 and 7.
2 x 3 x 7 are prime numbers.