Q: What are the prime factors of the number 35,381,540?

 A: 2, 5, 31, 149, 383

Why are those the prime factors of the number 35,381,540?

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 35,381,540

35,381,540
Factor Arrows
217,690,770
Factor Arrows
28,845,385
Factor Arrows
51,769,077
Factor Arrows
3157,067
Factor Arrows
149383

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, 31, 149, 383

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 31 x 149 x 383 = 35,381,540

This can also be written as 22 x 51 x 311 x 1491 x 3831 = 35,381,540

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


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