Q: What are the prime factors of the number 395,264?

 A: 2, 193

Why are those the prime factors of the number 395,264?

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 395,264

395,264
Factor Arrows
2197,632
Factor Arrows
298,816
Factor Arrows
249,408
Factor Arrows
224,704
Factor Arrows
212,352
Factor Arrows
26,176
Factor Arrows
23,088
Factor Arrows
21,544
Factor Arrows
2772
Factor Arrows
2386
Factor Arrows
2193

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, 193

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 193 = 395,264

This can also be written as 211 x 1931 = 395,264

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


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