Q: What are the prime factors of the number 245,557,473?

 A: 3, 7, 73, 467

Why are those the prime factors of the number 245,557,473?

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 245,557,473

245,557,473
Factor Arrows
381,852,491
Factor Arrows
711,693,213
Factor Arrows
71,670,459
Factor Arrows
7238,637
Factor Arrows
734,091
Factor Arrows
73467

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, 7, 73, 467

We can check our work by multiplying all of the prime factors together: 3 x 7 x 7 x 7 x 7 x 73 x 467 = 245,557,473

This can also be written as 31 x 74 x 731 x 4671 = 245,557,473

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


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