Q: What are the prime factors of the number 153,703,314?

 A: 2, 3, 137, 157, 397

Why are those the prime factors of the number 153,703,314?

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 153,703,314

153,703,314
Factor Arrows
276,851,657
Factor Arrows
325,617,219
Factor Arrows
38,539,073
Factor Arrows
13762,329
Factor Arrows
157397

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, 137, 157, 397

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 137 x 157 x 397 = 153,703,314

This can also be written as 21 x 32 x 1371 x 1571 x 3971 = 153,703,314

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


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