Q: What are the prime factors of the number 153,621,632?

 A: 2, 37, 163, 199

Why are those the prime factors of the number 153,621,632?

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 153,621,632

153,621,632
Factor Arrows
276,810,816
Factor Arrows
238,405,408
Factor Arrows
219,202,704
Factor Arrows
29,601,352
Factor Arrows
24,800,676
Factor Arrows
22,400,338
Factor Arrows
21,200,169
Factor Arrows
3732,437
Factor Arrows
163199

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, 37, 163, 199

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 37 x 163 x 199 = 153,621,632

This can also be written as 27 x 371 x 1631 x 1991 = 153,621,632

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


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