Q: What are the prime factors of the number 157,649,024?

 A: 2, 13, 17, 5573

Why are those the prime factors of the number 157,649,024?

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 157,649,024

157,649,024
Factor Arrows
278,824,512
Factor Arrows
239,412,256
Factor Arrows
219,706,128
Factor Arrows
29,853,064
Factor Arrows
24,926,532
Factor Arrows
22,463,266
Factor Arrows
21,231,633
Factor Arrows
1394,741
Factor Arrows
175,573

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, 13, 17, 5573

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 13 x 17 x 5,573 = 157,649,024

This can also be written as 27 x 131 x 171 x 5,5731 = 157,649,024

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


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