Q: What are the prime factors of the number 251,831,604?

 A: 2, 3, 71, 73, 4049

Why are those the prime factors of the number 251,831,604?

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 251,831,604

251,831,604
Factor Arrows
2125,915,802
Factor Arrows
262,957,901
Factor Arrows
320,985,967
Factor Arrows
71295,577
Factor Arrows
734,049

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, 71, 73, 4049

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 71 x 73 x 4,049 = 251,831,604

This can also be written as 22 x 31 x 711 x 731 x 4,0491 = 251,831,604

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


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