Q: What are the prime factors of the number 161,446,264?

 A: 2, 7, 31, 113, 823

Why are those the prime factors of the number 161,446,264?

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 161,446,264

161,446,264
Factor Arrows
280,723,132
Factor Arrows
240,361,566
Factor Arrows
220,180,783
Factor Arrows
72,882,969
Factor Arrows
3192,999
Factor Arrows
113823

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, 31, 113, 823

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 7 x 31 x 113 x 823 = 161,446,264

This can also be written as 23 x 71 x 311 x 1131 x 8231 = 161,446,264

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


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