Q: What are the prime factors of the number 505,451,000?

 A: 2, 5, 269, 1879

Why are those the prime factors of the number 505,451,000?

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 505,451,000

505,451,000
Factor Arrows
2252,725,500
Factor Arrows
2126,362,750
Factor Arrows
263,181,375
Factor Arrows
512,636,275
Factor Arrows
52,527,255
Factor Arrows
5505,451
Factor Arrows
2691,879

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, 269, 1879

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 5 x 5 x 5 x 269 x 1,879 = 505,451,000

This can also be written as 23 x 53 x 2691 x 1,8791 = 505,451,000

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


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