Q: What are the prime factors of the number 787,441,440?

 A: 2, 3, 5, 1640503

Why are those the prime factors of the number 787,441,440?

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 787,441,440

787,441,440
Factor Arrows
2393,720,720
Factor Arrows
2196,860,360
Factor Arrows
298,430,180
Factor Arrows
249,215,090
Factor Arrows
224,607,545
Factor Arrows
38,202,515
Factor Arrows
51,640,503

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, 1640503

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 5 x 1,640,503 = 787,441,440

This can also be written as 25 x 31 x 51 x 1,640,5031 = 787,441,440

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


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