Q: What are the prime factors of the number 308,424?

 A: 2, 3, 71, 181

Why are those the prime factors of the number 308,424?

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 308,424

308,424
Factor Arrows
2154,212
Factor Arrows
277,106
Factor Arrows
238,553
Factor Arrows
312,851
Factor Arrows
71181

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, 71, 181

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 71 x 181 = 308,424

This can also be written as 23 x 31 x 711 x 1811 = 308,424

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


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