Q: What are the prime factors of the number 120,842,304?

 A: 2, 3, 11, 29, 1973

Why are those the prime factors of the number 120,842,304?

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 120,842,304

120,842,304
Factor Arrows
260,421,152
Factor Arrows
230,210,576
Factor Arrows
215,105,288
Factor Arrows
27,552,644
Factor Arrows
23,776,322
Factor Arrows
21,888,161
Factor Arrows
3629,387
Factor Arrows
1157,217
Factor Arrows
291,973

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, 29, 1973

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 3 x 11 x 29 x 1,973 = 120,842,304

This can also be written as 26 x 31 x 111 x 291 x 1,9731 = 120,842,304

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


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