Q: What are the prime factors of the number 120,213,648?

 A: 2, 3, 761, 1097

Why are those the prime factors of the number 120,213,648?

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 120,213,648

120,213,648
Factor Arrows
260,106,824
Factor Arrows
230,053,412
Factor Arrows
215,026,706
Factor Arrows
27,513,353
Factor Arrows
32,504,451
Factor Arrows
3834,817
Factor Arrows
7611,097

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, 761, 1097

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 761 x 1,097 = 120,213,648

This can also be written as 24 x 32 x 7611 x 1,0971 = 120,213,648

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


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