Q: What are the prime factors of the number 787,050,420?

 A: 2, 3, 5, 13, 157, 6427

Why are those the prime factors of the number 787,050,420?

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 787,050,420

787,050,420
Factor Arrows
2393,525,210
Factor Arrows
2196,762,605
Factor Arrows
365,587,535
Factor Arrows
513,117,507
Factor Arrows
131,009,039
Factor Arrows
1576,427

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, 13, 157, 6427

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 5 x 13 x 157 x 6,427 = 787,050,420

This can also be written as 22 x 31 x 51 x 131 x 1571 x 6,4271 = 787,050,420

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


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