Q: What are the prime factors of the number 157,152,624?

 A: 2, 3, 17, 29, 229

Why are those the prime factors of the number 157,152,624?

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 157,152,624

157,152,624
Factor Arrows
278,576,312
Factor Arrows
239,288,156
Factor Arrows
219,644,078
Factor Arrows
29,822,039
Factor Arrows
33,274,013
Factor Arrows
17192,589
Factor Arrows
296,641
Factor Arrows
29229

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, 17, 29, 229

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 17 x 29 x 29 x 229 = 157,152,624

This can also be written as 24 x 31 x 171 x 292 x 2291 = 157,152,624

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


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