Q: What are the prime factors of the number 31,408,454?

 A: 2, 7, 11, 18541

Why are those the prime factors of the number 31,408,454?

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 31,408,454

31,408,454
Factor Arrows
215,704,227
Factor Arrows
72,243,461
Factor Arrows
11203,951
Factor Arrows
1118,541

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, 7, 11, 18541

We can check our work by multiplying all of the prime factors together: 2 x 7 x 11 x 11 x 18,541 = 31,408,454

This can also be written as 21 x 71 x 112 x 18,5411 = 31,408,454

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


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