Q: What are the prime factors of the number 772,777,515?

 A: 3, 5, 131, 393271

Why are those the prime factors of the number 772,777,515?

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 772,777,515

772,777,515
Factor Arrows
3257,592,505
Factor Arrows
551,518,501
Factor Arrows
131393,271

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, 131, 393271

We can check our work by multiplying all of the prime factors together: 3 x 5 x 131 x 393,271 = 772,777,515

This can also be written as 31 x 51 x 1311 x 393,2711 = 772,777,515

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


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