Q: What are the prime factors of the number 121,440,528?

 A: 2, 3, 11, 76667

Why are those the prime factors of the number 121,440,528?

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 121,440,528

121,440,528
Factor Arrows
260,720,264
Factor Arrows
230,360,132
Factor Arrows
215,180,066
Factor Arrows
27,590,033
Factor Arrows
32,530,011
Factor Arrows
3843,337
Factor Arrows
1176,667

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, 11, 76667

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 3 x 11 x 76,667 = 121,440,528

This can also be written as 24 x 32 x 111 x 76,6671 = 121,440,528

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


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