Q: What are the prime factors of the number 251,046,344?

 A: 2, 17, 71, 25999

Why are those the prime factors of the number 251,046,344?

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 251,046,344

251,046,344
Factor Arrows
2125,523,172
Factor Arrows
262,761,586
Factor Arrows
231,380,793
Factor Arrows
171,845,929
Factor Arrows
7125,999

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, 17, 71, 25999

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 17 x 71 x 25,999 = 251,046,344

This can also be written as 23 x 171 x 711 x 25,9991 = 251,046,344

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


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