Q: What are the prime factors of the number 257,455,350?

 A: 2, 3, 5, 59, 9697

Why are those the prime factors of the number 257,455,350?

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 257,455,350

257,455,350
Factor Arrows
2128,727,675
Factor Arrows
342,909,225
Factor Arrows
314,303,075
Factor Arrows
52,860,615
Factor Arrows
5572,123
Factor Arrows
599,697

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, 59, 9697

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 5 x 5 x 59 x 9,697 = 257,455,350

This can also be written as 21 x 32 x 52 x 591 x 9,6971 = 257,455,350

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


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