Q: What are the prime factors of the number 285,840,688?

 A: 2, 7, 23, 37, 2999

Why are those the prime factors of the number 285,840,688?

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 285,840,688

285,840,688
Factor Arrows
2142,920,344
Factor Arrows
271,460,172
Factor Arrows
235,730,086
Factor Arrows
217,865,043
Factor Arrows
72,552,149
Factor Arrows
23110,963
Factor Arrows
372,999

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, 23, 37, 2999

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 7 x 23 x 37 x 2,999 = 285,840,688

This can also be written as 24 x 71 x 231 x 371 x 2,9991 = 285,840,688

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


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