Q: What are the prime factors of the number 40,862,185?

 A: 5, 7, 13, 31, 2897

Why are those the prime factors of the number 40,862,185?

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 40,862,185

40,862,185
Factor Arrows
58,172,437
Factor Arrows
71,167,491
Factor Arrows
1389,807
Factor Arrows
312,897

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:

5, 7, 13, 31, 2897

We can check our work by multiplying all of the prime factors together: 5 x 7 x 13 x 31 x 2,897 = 40,862,185

This can also be written as 51 x 71 x 131 x 311 x 2,8971 = 40,862,185

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


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