Q: What are the prime factors of the number 148,785?

 A: 3, 5, 7, 13, 109

Why are those the prime factors of the number 148,785?

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 148,785

148,785
Factor Arrows
349,595
Factor Arrows
59,919
Factor Arrows
71,417
Factor Arrows
13109

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:

3, 5, 7, 13, 109

We can check our work by multiplying all of the prime factors together: 3 x 5 x 7 x 13 x 109 = 148,785

This can also be written as 31 x 51 x 71 x 131 x 1091 = 148,785

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


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