Q: What are the prime factors of the number 153,103,265?

 A: 5, 7, 31, 73, 1933

Why are those the prime factors of the number 153,103,265?

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 153,103,265

153,103,265
Factor Arrows
530,620,653
Factor Arrows
74,374,379
Factor Arrows
31141,109
Factor Arrows
731,933

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:

5, 7, 31, 73, 1933

We can check our work by multiplying all of the prime factors together: 5 x 7 x 31 x 73 x 1,933 = 153,103,265

This can also be written as 51 x 71 x 311 x 731 x 1,9331 = 153,103,265

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


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