Q: What are the prime factors of the number 145,335,180?

 A: 2, 3, 5, 19, 127487

Why are those the prime factors of the number 145,335,180?

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 145,335,180

145,335,180
Factor Arrows
272,667,590
Factor Arrows
236,333,795
Factor Arrows
312,111,265
Factor Arrows
52,422,253
Factor Arrows
19127,487

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, 5, 19, 127487

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 5 x 19 x 127,487 = 145,335,180

This can also be written as 22 x 31 x 51 x 191 x 127,4871 = 145,335,180

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


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