Q: What are the prime factors of the number 287,777,756?

 A: 2, 7, 263, 39079

Why are those the prime factors of the number 287,777,756?

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 287,777,756

287,777,756
Factor Arrows
2143,888,878
Factor Arrows
271,944,439
Factor Arrows
710,277,777
Factor Arrows
26339,079

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, 7, 263, 39079

We can check our work by multiplying all of the prime factors together: 2 x 2 x 7 x 263 x 39,079 = 287,777,756

This can also be written as 22 x 71 x 2631 x 39,0791 = 287,777,756

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


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