Q: What are the prime factors of the number 245,377,223?

 A: 7, 13, 149, 18097

Why are those the prime factors of the number 245,377,223?

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 245,377,223

245,377,223
Factor Arrows
735,053,889
Factor Arrows
132,696,453
Factor Arrows
14918,097

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:

7, 13, 149, 18097

We can check our work by multiplying all of the prime factors together: 7 x 13 x 149 x 18,097 = 245,377,223

This can also be written as 71 x 131 x 1491 x 18,0971 = 245,377,223

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


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