Q: What are the prime factors of the number 129,087,056?

 A: 2, 7, 271, 4253

Why are those the prime factors of the number 129,087,056?

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 129,087,056

129,087,056
Factor Arrows
264,543,528
Factor Arrows
232,271,764
Factor Arrows
216,135,882
Factor Arrows
28,067,941
Factor Arrows
71,152,563
Factor Arrows
2714,253

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, 7, 271, 4253

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 7 x 271 x 4,253 = 129,087,056

This can also be written as 24 x 71 x 2711 x 4,2531 = 129,087,056

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


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