Q: What are the prime factors of the number 135,583,872?

 A: 2, 3, 71, 4973

Why are those the prime factors of the number 135,583,872?

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 135,583,872

135,583,872
Factor Arrows
267,791,936
Factor Arrows
233,895,968
Factor Arrows
216,947,984
Factor Arrows
28,473,992
Factor Arrows
24,236,996
Factor Arrows
22,118,498
Factor Arrows
21,059,249
Factor Arrows
3353,083
Factor Arrows
714,973

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, 71, 4973

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 2 x 3 x 71 x 4,973 = 135,583,872

This can also be written as 27 x 31 x 711 x 4,9731 = 135,583,872

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


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