Q: What are the prime factors of the number 487,146?

 A: 2, 3, 11, 61

Why are those the prime factors of the number 487,146?

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 487,146

487,146
Factor Arrows
2243,573
Factor Arrows
381,191
Factor Arrows
117,381
Factor Arrows
11671
Factor Arrows
1161

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, 11, 61

We can check our work by multiplying all of the prime factors together: 2 x 3 x 11 x 11 x 11 x 61 = 487,146

This can also be written as 21 x 31 x 113 x 611 = 487,146

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


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