Q: What are the prime factors of the number 355,585,520?

 A: 2, 5, 23, 149, 1297

Why are those the prime factors of the number 355,585,520?

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 355,585,520

355,585,520
Factor Arrows
2177,792,760
Factor Arrows
288,896,380
Factor Arrows
244,448,190
Factor Arrows
222,224,095
Factor Arrows
54,444,819
Factor Arrows
23193,253
Factor Arrows
1491,297

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, 5, 23, 149, 1297

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 5 x 23 x 149 x 1,297 = 355,585,520

This can also be written as 24 x 51 x 231 x 1491 x 1,2971 = 355,585,520

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


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