Q: What are the prime factors of the number 76,361,600?

 A: 2, 5, 7, 487

Why are those the prime factors of the number 76,361,600?

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 76,361,600

76,361,600
Factor Arrows
238,180,800
Factor Arrows
219,090,400
Factor Arrows
29,545,200
Factor Arrows
24,772,600
Factor Arrows
22,386,300
Factor Arrows
21,193,150
Factor Arrows
2596,575
Factor Arrows
5119,315
Factor Arrows
523,863
Factor Arrows
73,409
Factor Arrows
7487

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, 5, 7, 487

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 5 x 5 x 7 x 7 x 487 = 76,361,600

This can also be written as 27 x 52 x 72 x 4871 = 76,361,600

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


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