Q: What are the prime factors of the number 412,433,424?

 A: 2, 3, 13, 23, 31, 103

Why are those the prime factors of the number 412,433,424?

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 412,433,424

412,433,424
Factor Arrows
2206,216,712
Factor Arrows
2103,108,356
Factor Arrows
251,554,178
Factor Arrows
225,777,089
Factor Arrows
38,592,363
Factor Arrows
32,864,121
Factor Arrows
3954,707
Factor Arrows
1373,439
Factor Arrows
233,193
Factor Arrows
31103

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, 13, 23, 31, 103

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 3 x 3 x 13 x 23 x 31 x 103 = 412,433,424

This can also be written as 24 x 33 x 131 x 231 x 311 x 1031 = 412,433,424

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


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