Q: What are the prime factors of the number 31,336,551?

 A: 3, 43, 2999

Why are those the prime factors of the number 31,336,551?

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 31,336,551

31,336,551
Factor Arrows
310,445,517
Factor Arrows
33,481,839
Factor Arrows
31,160,613
Factor Arrows
3386,871
Factor Arrows
3128,957
Factor Arrows
432,999

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, 43, 2999

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 3 x 3 x 43 x 2,999 = 31,336,551

This can also be written as 35 x 431 x 2,9991 = 31,336,551

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


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