Q: What are the prime factors of the number 285,270?

 A: 2, 3, 5, 37, 257

Why are those the prime factors of the number 285,270?

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 285,270

285,270
Factor Arrows
2142,635
Factor Arrows
347,545
Factor Arrows
59,509
Factor Arrows
37257

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, 5, 37, 257

We can check our work by multiplying all of the prime factors together: 2 x 3 x 5 x 37 x 257 = 285,270

This can also be written as 21 x 31 x 51 x 371 x 2571 = 285,270

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


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