Q: What are the prime factors of the number 774,143,264?

 A: 2, 139, 269, 647

Why are those the prime factors of the number 774,143,264?

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 774,143,264

774,143,264
Factor Arrows
2387,071,632
Factor Arrows
2193,535,816
Factor Arrows
296,767,908
Factor Arrows
248,383,954
Factor Arrows
224,191,977
Factor Arrows
139174,043
Factor Arrows
269647

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, 139, 269, 647

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 139 x 269 x 647 = 774,143,264

This can also be written as 25 x 1391 x 2691 x 6471 = 774,143,264

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


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