Q: What are the prime factors of the number 121,526,604?

 A: 2, 3, 73, 131, 353

Why are those the prime factors of the number 121,526,604?

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 121,526,604

121,526,604
Factor Arrows
260,763,302
Factor Arrows
230,381,651
Factor Arrows
310,127,217
Factor Arrows
33,375,739
Factor Arrows
7346,243
Factor Arrows
131353

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, 73, 131, 353

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 73 x 131 x 353 = 121,526,604

This can also be written as 22 x 32 x 731 x 1311 x 3531 = 121,526,604

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


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