Q: What are the prime factors of the number 154,446,649?

 A: 7, 17, 19, 83, 823

Why are those the prime factors of the number 154,446,649?

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 154,446,649

154,446,649
Factor Arrows
722,063,807
Factor Arrows
171,297,871
Factor Arrows
1968,309
Factor Arrows
83823

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:

7, 17, 19, 83, 823

We can check our work by multiplying all of the prime factors together: 7 x 17 x 19 x 83 x 823 = 154,446,649

This can also be written as 71 x 171 x 191 x 831 x 8231 = 154,446,649

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


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