Q: What are the prime factors of the number 251,113,472?

 A: 2, 101, 607

Why are those the prime factors of the number 251,113,472?

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 251,113,472

251,113,472
Factor Arrows
2125,556,736
Factor Arrows
262,778,368
Factor Arrows
231,389,184
Factor Arrows
215,694,592
Factor Arrows
27,847,296
Factor Arrows
23,923,648
Factor Arrows
21,961,824
Factor Arrows
2980,912
Factor Arrows
2490,456
Factor Arrows
2245,228
Factor Arrows
2122,614
Factor Arrows
261,307
Factor Arrows
101607

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, 101, 607

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 101 x 607 = 251,113,472

This can also be written as 212 x 1011 x 6071 = 251,113,472

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


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