Q: What are the prime factors of the number 765,400,455?

 A: 3, 5, 347, 16339

Why are those the prime factors of the number 765,400,455?

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 765,400,455

765,400,455
Factor Arrows
3255,133,485
Factor Arrows
385,044,495
Factor Arrows
328,348,165
Factor Arrows
55,669,633
Factor Arrows
34716,339

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, 347, 16339

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 5 x 347 x 16,339 = 765,400,455

This can also be written as 33 x 51 x 3471 x 16,3391 = 765,400,455

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


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