Q: What are the prime factors of the number 66,670,380?

 A: 2, 3, 5, 7, 7559

Why are those the prime factors of the number 66,670,380?

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 66,670,380

66,670,380
Factor Arrows
233,335,190
Factor Arrows
216,667,595
Factor Arrows
35,555,865
Factor Arrows
31,851,955
Factor Arrows
5370,391
Factor Arrows
752,913
Factor Arrows
77,559

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:

2, 3, 5, 7, 7559

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 5 x 7 x 7 x 7,559 = 66,670,380

This can also be written as 22 x 32 x 51 x 72 x 7,5591 = 66,670,380

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


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