Q: What are the prime factors of the number 155,172,363?

 A: 3, 107, 157, 3079

Why are those the prime factors of the number 155,172,363?

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 155,172,363

155,172,363
Factor Arrows
351,724,121
Factor Arrows
107483,403
Factor Arrows
1573,079

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:

3, 107, 157, 3079

We can check our work by multiplying all of the prime factors together: 3 x 107 x 157 x 3,079 = 155,172,363

This can also be written as 31 x 1071 x 1571 x 3,0791 = 155,172,363

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


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