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Prime factor calculator is used to find the prime number multiples for a given number. A prime number is

having one and itself as factors. By using this calculator we can write the prime factors as a product of prime

numbers in unique way of representation.

Solution:

Factors of 90 is

90 = 2 x 45

90 = 2 x 3 x 15

90 =2 x 3 x 3 x 5

So the prime factors for 90 are 2, 3, 3 and 5.

Solution:

Factors of 210

210 =2 x 105

210 = 2 x 3 x 35

210 = 2 x 3 x 5 x 7

So the prime factors for 210 are 2, 3, 5 and 7.