Q: What are the prime factors of the number 423,002,430?

 A: 2, 3, 5, 23, 181, 1129

Why are those the prime factors of the number 423,002,430?

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 423,002,430

423,002,430
Factor Arrows
2211,501,215
Factor Arrows
370,500,405
Factor Arrows
323,500,135
Factor Arrows
54,700,027
Factor Arrows
23204,349
Factor Arrows
1811,129

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, 5, 23, 181, 1129

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 5 x 23 x 181 x 1,129 = 423,002,430

This can also be written as 21 x 32 x 51 x 231 x 1811 x 1,1291 = 423,002,430

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


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