Q: What are the prime factors of the number 73,434,256?

 A: 2, 7, 53, 89, 139

Why are those the prime factors of the number 73,434,256?

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 73,434,256

73,434,256
Factor Arrows
236,717,128
Factor Arrows
218,358,564
Factor Arrows
29,179,282
Factor Arrows
24,589,641
Factor Arrows
7655,663
Factor Arrows
5312,371
Factor Arrows
89139

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, 7, 53, 89, 139

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 7 x 53 x 89 x 139 = 73,434,256

This can also be written as 24 x 71 x 531 x 891 x 1391 = 73,434,256

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


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