Q: What are the prime factors of the number 145,032,130?

 A: 2, 5, 19, 47, 109, 149

Why are those the prime factors of the number 145,032,130?

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 145,032,130

145,032,130
Factor Arrows
272,516,065
Factor Arrows
514,503,213
Factor Arrows
19763,327
Factor Arrows
4716,241
Factor Arrows
109149

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, 5, 19, 47, 109, 149

We can check our work by multiplying all of the prime factors together: 2 x 5 x 19 x 47 x 109 x 149 = 145,032,130

This can also be written as 21 x 51 x 191 x 471 x 1091 x 1491 = 145,032,130

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


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