Q: What are the prime factors of the number 257,400,222?

 A: 2, 3, 23, 563, 3313

Why are those the prime factors of the number 257,400,222?

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 257,400,222

257,400,222
Factor Arrows
2128,700,111
Factor Arrows
342,900,037
Factor Arrows
231,865,219
Factor Arrows
5633,313

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, 23, 563, 3313

We can check our work by multiplying all of the prime factors together: 2 x 3 x 23 x 563 x 3,313 = 257,400,222

This can also be written as 21 x 31 x 231 x 5631 x 3,3131 = 257,400,222

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


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