Q: What are the prime factors of the number 67,400,388?

 A: 2, 3, 11, 15473

Why are those the prime factors of the number 67,400,388?

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 67,400,388

67,400,388
Factor Arrows
233,700,194
Factor Arrows
216,850,097
Factor Arrows
35,616,699
Factor Arrows
31,872,233
Factor Arrows
11170,203
Factor Arrows
1115,473

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, 11, 15473

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 11 x 11 x 15,473 = 67,400,388

This can also be written as 22 x 32 x 112 x 15,4731 = 67,400,388

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


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