Q: What are the prime factors of the number 505,345,410?

 A: 2, 3, 5, 47, 193, 619

Why are those the prime factors of the number 505,345,410?

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 505,345,410

505,345,410
Factor Arrows
2252,672,705
Factor Arrows
384,224,235
Factor Arrows
328,074,745
Factor Arrows
55,614,949
Factor Arrows
47119,467
Factor Arrows
193619

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, 47, 193, 619

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 5 x 47 x 193 x 619 = 505,345,410

This can also be written as 21 x 32 x 51 x 471 x 1931 x 6191 = 505,345,410

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


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