Q: What are the prime factors of the number 345,410,400?

 A: 2, 3, 5, 43, 3347

Why are those the prime factors of the number 345,410,400?

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 345,410,400

345,410,400
Factor Arrows
2172,705,200
Factor Arrows
286,352,600
Factor Arrows
243,176,300
Factor Arrows
221,588,150
Factor Arrows
210,794,075
Factor Arrows
33,598,025
Factor Arrows
5719,605
Factor Arrows
5143,921
Factor Arrows
433,347

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, 43, 3347

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 5 x 5 x 43 x 3,347 = 345,410,400

This can also be written as 25 x 31 x 52 x 431 x 3,3471 = 345,410,400

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


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