Q: What are the prime factors of the number 251,334,320?

 A: 2, 5, 71, 44249

Why are those the prime factors of the number 251,334,320?

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 251,334,320

251,334,320
Factor Arrows
2125,667,160
Factor Arrows
262,833,580
Factor Arrows
231,416,790
Factor Arrows
215,708,395
Factor Arrows
53,141,679
Factor Arrows
7144,249

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, 5, 71, 44249

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 5 x 71 x 44,249 = 251,334,320

This can also be written as 24 x 51 x 711 x 44,2491 = 251,334,320

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


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