Q: What are the prime factors of the number 77,368,440?

 A: 2, 3, 5, 433, 1489

Why are those the prime factors of the number 77,368,440?

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 77,368,440

77,368,440
Factor Arrows
238,684,220
Factor Arrows
219,342,110
Factor Arrows
29,671,055
Factor Arrows
33,223,685
Factor Arrows
5644,737
Factor Arrows
4331,489

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, 433, 1489

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 5 x 433 x 1,489 = 77,368,440

This can also be written as 23 x 31 x 51 x 4331 x 1,4891 = 77,368,440

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


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