Q: What are the prime factors of the number 77,312,160?

 A: 2, 3, 5, 53, 1013

Why are those the prime factors of the number 77,312,160?

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 77,312,160

77,312,160
Factor Arrows
238,656,080
Factor Arrows
219,328,040
Factor Arrows
29,664,020
Factor Arrows
24,832,010
Factor Arrows
22,416,005
Factor Arrows
3805,335
Factor Arrows
3268,445
Factor Arrows
553,689
Factor Arrows
531,013

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, 53, 1013

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 3 x 5 x 53 x 1,013 = 77,312,160

This can also be written as 25 x 32 x 51 x 531 x 1,0131 = 77,312,160

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


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