Q: What are the prime factors of the number 263,424?

 A: 2, 3, 7

Why are those the prime factors of the number 263,424?

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 263,424

263,424
Factor Arrows
2131,712
Factor Arrows
265,856
Factor Arrows
232,928
Factor Arrows
216,464
Factor Arrows
28,232
Factor Arrows
24,116
Factor Arrows
22,058
Factor Arrows
21,029
Factor Arrows
3343
Factor Arrows
749
Factor Arrows
77

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, 7

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 3 x 7 x 7 x 7 = 263,424

This can also be written as 28 x 31 x 73 = 263,424

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


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