Q: What are the prime factors of the number 121,304,142?

 A: 2, 3, 27733

Why are those the prime factors of the number 121,304,142?

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 121,304,142

121,304,142
Factor Arrows
260,652,071
Factor Arrows
320,217,357
Factor Arrows
36,739,119
Factor Arrows
32,246,373
Factor Arrows
3748,791
Factor Arrows
3249,597
Factor Arrows
383,199
Factor Arrows
327,733

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, 27733

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 27,733 = 121,304,142

This can also be written as 21 x 37 x 27,7331 = 121,304,142

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


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