Q: What are the prime factors of the number 120,148,236?

 A: 2, 3, 13, 149, 1723

Why are those the prime factors of the number 120,148,236?

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 120,148,236

120,148,236
Factor Arrows
260,074,118
Factor Arrows
230,037,059
Factor Arrows
310,012,353
Factor Arrows
33,337,451
Factor Arrows
13256,727
Factor Arrows
1491,723

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, 13, 149, 1723

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 13 x 149 x 1,723 = 120,148,236

This can also be written as 22 x 32 x 131 x 1491 x 1,7231 = 120,148,236

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


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