Q: What are the prime factors of the number 66,575,565?

 A: 3, 5, 7, 109, 277

Why are those the prime factors of the number 66,575,565?

Prime factors are the prime numbers that can be multipled together to equal the original number. You find the factors by dividing by prime numbers. It is best shown by creating a Factor Tree.

Factor Tree for the number 66,575,565

66,575,565
Factor Arrows
322,191,855
Factor Arrows
37,397,285
Factor Arrows
51,479,457
Factor Arrows
7211,351
Factor Arrows
730,193
Factor Arrows
109277

The numbers in bold above are the prime factors. If there are multiples, you only count them one time. This leads us to our prime factors of:

3, 5, 7, 109, 277

We can check our work by multiplying all of the prime factors together: 3 x 3 x 5 x 7 x 7 x 109 x 277 = 66,575,565

This can also be written as 32 x 51 x 72 x 1091 x 2771 = 66,575,565

If you would like to know more, or need additional explanation, please review our prime factorization explanation.


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