Q: What are the prime factors of the number 251,035,464?

 A: 2, 3, 17, 157, 3919

Why are those the prime factors of the number 251,035,464?

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 251,035,464

251,035,464
Factor Arrows
2125,517,732
Factor Arrows
262,758,866
Factor Arrows
231,379,433
Factor Arrows
310,459,811
Factor Arrows
17615,283
Factor Arrows
1573,919

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, 17, 157, 3919

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 17 x 157 x 3,919 = 251,035,464

This can also be written as 23 x 31 x 171 x 1571 x 3,9191 = 251,035,464

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


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