Q: What are the prime factors of the number 146,387,808?

 A: 2, 3, 7, 72613

Why are those the prime factors of the number 146,387,808?

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 146,387,808

146,387,808
Factor Arrows
273,193,904
Factor Arrows
236,596,952
Factor Arrows
218,298,476
Factor Arrows
29,149,238
Factor Arrows
24,574,619
Factor Arrows
31,524,873
Factor Arrows
3508,291
Factor Arrows
772,613

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, 7, 72613

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 3 x 7 x 72,613 = 146,387,808

This can also be written as 25 x 32 x 71 x 72,6131 = 146,387,808

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


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