Q: What are the prime factors of the number 811,803,420?

 A: 2, 3, 5, 59, 76441

Why are those the prime factors of the number 811,803,420?

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 811,803,420

811,803,420
Factor Arrows
2405,901,710
Factor Arrows
2202,950,855
Factor Arrows
367,650,285
Factor Arrows
322,550,095
Factor Arrows
54,510,019
Factor Arrows
5976,441

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, 5, 59, 76441

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 5 x 59 x 76,441 = 811,803,420

This can also be written as 22 x 32 x 51 x 591 x 76,4411 = 811,803,420

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


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