Q: What are the prime factors of the number 157,116,600?

 A: 2, 3, 5, 191, 457

Why are those the prime factors of the number 157,116,600?

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 157,116,600

157,116,600
Factor Arrows
278,558,300
Factor Arrows
239,279,150
Factor Arrows
219,639,575
Factor Arrows
36,546,525
Factor Arrows
32,182,175
Factor Arrows
5436,435
Factor Arrows
587,287
Factor Arrows
191457

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, 191, 457

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 5 x 5 x 191 x 457 = 157,116,600

This can also be written as 23 x 32 x 52 x 1911 x 4571 = 157,116,600

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


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