Q: What are the prime factors of the number 46,881,408?

 A: 2, 3, 7, 107, 163

Why are those the prime factors of the number 46,881,408?

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 46,881,408

46,881,408
Factor Arrows
223,440,704
Factor Arrows
211,720,352
Factor Arrows
25,860,176
Factor Arrows
22,930,088
Factor Arrows
21,465,044
Factor Arrows
2732,522
Factor Arrows
2366,261
Factor Arrows
3122,087
Factor Arrows
717,441
Factor Arrows
107163

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, 3, 7, 107, 163

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 3 x 7 x 107 x 163 = 46,881,408

This can also be written as 27 x 31 x 71 x 1071 x 1631 = 46,881,408

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


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