Q: What are the prime factors of the number 245,388?

 A: 2, 3, 11, 13

Why are those the prime factors of the number 245,388?

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 245,388

245,388
Factor Arrows
2122,694
Factor Arrows
261,347
Factor Arrows
320,449
Factor Arrows
111,859
Factor Arrows
11169
Factor Arrows
1313

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, 11, 13

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 11 x 11 x 13 x 13 = 245,388

This can also be written as 22 x 31 x 112 x 132 = 245,388

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


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