Q: What are the prime factors of the number 121,650,768?

 A: 2, 3, 19, 14821

Why are those the prime factors of the number 121,650,768?

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 121,650,768

121,650,768
Factor Arrows
260,825,384
Factor Arrows
230,412,692
Factor Arrows
215,206,346
Factor Arrows
27,603,173
Factor Arrows
32,534,391
Factor Arrows
3844,797
Factor Arrows
3281,599
Factor Arrows
1914,821

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, 19, 14821

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 3 x 19 x 14,821 = 121,650,768

This can also be written as 24 x 33 x 191 x 14,8211 = 121,650,768

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


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