Q: What are the prime factors of the number 121,660,064?

 A: 2, 23, 47, 3517

Why are those the prime factors of the number 121,660,064?

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 121,660,064

121,660,064
Factor Arrows
260,830,032
Factor Arrows
230,415,016
Factor Arrows
215,207,508
Factor Arrows
27,603,754
Factor Arrows
23,801,877
Factor Arrows
23165,299
Factor Arrows
473,517

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, 23, 47, 3517

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 23 x 47 x 3,517 = 121,660,064

This can also be written as 25 x 231 x 471 x 3,5171 = 121,660,064

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


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