Q: What are the prime factors of the number 145,331,107?

 A: 67, 71, 137, 223

Why are those the prime factors of the number 145,331,107?

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 145,331,107

145,331,107
Factor Arrows
672,169,121
Factor Arrows
7130,551
Factor Arrows
137223

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:

67, 71, 137, 223

We can check our work by multiplying all of the prime factors together: 67 x 71 x 137 x 223 = 145,331,107

This can also be written as 671 x 711 x 1371 x 2231 = 145,331,107

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


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