Q: What are the prime factors of the number 42,686,064?

 A: 2, 3, 251, 1181

Why are those the prime factors of the number 42,686,064?

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 42,686,064

42,686,064
Factor Arrows
221,343,032
Factor Arrows
210,671,516
Factor Arrows
25,335,758
Factor Arrows
22,667,879
Factor Arrows
3889,293
Factor Arrows
3296,431
Factor Arrows
2511,181

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, 251, 1181

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 251 x 1,181 = 42,686,064

This can also be written as 24 x 32 x 2511 x 1,1811 = 42,686,064

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


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