Q: What are the prime factors of the number 156,990,750?

 A: 2, 3, 5, 7, 17, 1759

Why are those the prime factors of the number 156,990,750?

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 156,990,750

156,990,750
Factor Arrows
278,495,375
Factor Arrows
326,165,125
Factor Arrows
55,233,025
Factor Arrows
51,046,605
Factor Arrows
5209,321
Factor Arrows
729,903
Factor Arrows
171,759

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, 7, 17, 1759

We can check our work by multiplying all of the prime factors together: 2 x 3 x 5 x 5 x 5 x 7 x 17 x 1,759 = 156,990,750

This can also be written as 21 x 31 x 53 x 71 x 171 x 1,7591 = 156,990,750

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


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