Q: What are the prime factors of the number 70,323,408?

 A: 2, 3, 19, 25703

Why are those the prime factors of the number 70,323,408?

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 70,323,408

70,323,408
Factor Arrows
235,161,704
Factor Arrows
217,580,852
Factor Arrows
28,790,426
Factor Arrows
24,395,213
Factor Arrows
31,465,071
Factor Arrows
3488,357
Factor Arrows
1925,703

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, 19, 25703

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 3 x 19 x 25,703 = 70,323,408

This can also be written as 24 x 32 x 191 x 25,7031 = 70,323,408

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


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