Q: What are the prime factors of the number 103,203,315?

 A: 3, 5, 29, 101

Why are those the prime factors of the number 103,203,315?

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 103,203,315

103,203,315
Factor Arrows
334,401,105
Factor Arrows
311,467,035
Factor Arrows
33,822,345
Factor Arrows
31,274,115
Factor Arrows
3424,705
Factor Arrows
584,941
Factor Arrows
292,929
Factor Arrows
29101

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, 5, 29, 101

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 3 x 3 x 5 x 29 x 29 x 101 = 103,203,315

This can also be written as 35 x 51 x 292 x 1011 = 103,203,315

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


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