Q: What are the prime factors of the number 663,377,550?

 A: 2, 3, 5, 11, 409, 983

Why are those the prime factors of the number 663,377,550?

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 663,377,550

663,377,550
Factor Arrows
2331,688,775
Factor Arrows
3110,562,925
Factor Arrows
522,112,585
Factor Arrows
54,422,517
Factor Arrows
11402,047
Factor Arrows
409983

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, 11, 409, 983

We can check our work by multiplying all of the prime factors together: 2 x 3 x 5 x 5 x 11 x 409 x 983 = 663,377,550

This can also be written as 21 x 31 x 52 x 111 x 4091 x 9831 = 663,377,550

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


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