Q: What are the prime factors of the number 74,536,368?

 A: 2, 3, 71, 21871

Why are those the prime factors of the number 74,536,368?

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 74,536,368

74,536,368
Factor Arrows
237,268,184
Factor Arrows
218,634,092
Factor Arrows
29,317,046
Factor Arrows
24,658,523
Factor Arrows
31,552,841
Factor Arrows
7121,871

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, 71, 21871

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 71 x 21,871 = 74,536,368

This can also be written as 24 x 31 x 711 x 21,8711 = 74,536,368

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


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