Q: What are the prime factors of the number 74,671,620?

 A: 2, 3, 5, 853, 1459

Why are those the prime factors of the number 74,671,620?

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 74,671,620

74,671,620
Factor Arrows
237,335,810
Factor Arrows
218,667,905
Factor Arrows
36,222,635
Factor Arrows
51,244,527
Factor Arrows
8531,459

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, 853, 1459

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 5 x 853 x 1,459 = 74,671,620

This can also be written as 22 x 31 x 51 x 8531 x 1,4591 = 74,671,620

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


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