Q: What are the prime factors of the number 140,591,550?

 A: 2, 3, 5, 11, 139, 613

Why are those the prime factors of the number 140,591,550?

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 140,591,550

140,591,550
Factor Arrows
270,295,775
Factor Arrows
323,431,925
Factor Arrows
54,686,385
Factor Arrows
5937,277
Factor Arrows
1185,207
Factor Arrows
139613

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, 5, 11, 139, 613

We can check our work by multiplying all of the prime factors together: 2 x 3 x 5 x 5 x 11 x 139 x 613 = 140,591,550

This can also be written as 21 x 31 x 52 x 111 x 1391 x 6131 = 140,591,550

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


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