Q: What are the prime factors of the number 145,134,144?

 A: 2, 3, 251969

Why are those the prime factors of the number 145,134,144?

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 145,134,144

145,134,144
Factor Arrows
272,567,072
Factor Arrows
236,283,536
Factor Arrows
218,141,768
Factor Arrows
29,070,884
Factor Arrows
24,535,442
Factor Arrows
22,267,721
Factor Arrows
3755,907
Factor Arrows
3251,969

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, 251969

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 3 x 3 x 251,969 = 145,134,144

This can also be written as 26 x 32 x 251,9691 = 145,134,144

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


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