Q: What are the prime factors of the number 423,522,148?

 A: 2, 7, 29, 199, 2621

Why are those the prime factors of the number 423,522,148?

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 423,522,148

423,522,148
Factor Arrows
2211,761,074
Factor Arrows
2105,880,537
Factor Arrows
715,125,791
Factor Arrows
29521,579
Factor Arrows
1992,621

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, 7, 29, 199, 2621

We can check our work by multiplying all of the prime factors together: 2 x 2 x 7 x 29 x 199 x 2,621 = 423,522,148

This can also be written as 22 x 71 x 291 x 1991 x 2,6211 = 423,522,148

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


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