Q: What are the prime factors of the number 145,070,208?

 A: 2, 3, 125929

Why are those the prime factors of the number 145,070,208?

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 145,070,208

145,070,208
Factor Arrows
272,535,104
Factor Arrows
236,267,552
Factor Arrows
218,133,776
Factor Arrows
29,066,888
Factor Arrows
24,533,444
Factor Arrows
22,266,722
Factor Arrows
21,133,361
Factor Arrows
3377,787
Factor Arrows
3125,929

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, 125929

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 3 x 3 x 125,929 = 145,070,208

This can also be written as 27 x 32 x 125,9291 = 145,070,208

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


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