Q: What are the prime factors of the number 742,847,855?

 A: 5, 157, 733, 1291

Why are those the prime factors of the number 742,847,855?

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 742,847,855

742,847,855
Factor Arrows
5148,569,571
Factor Arrows
157946,303
Factor Arrows
7331,291

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:

5, 157, 733, 1291

We can check our work by multiplying all of the prime factors together: 5 x 157 x 733 x 1,291 = 742,847,855

This can also be written as 51 x 1571 x 7331 x 1,2911 = 742,847,855

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


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