Q: What are the prime factors of the number 205,015,300?

 A: 2, 5, 7, 292879

Why are those the prime factors of the number 205,015,300?

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 205,015,300

205,015,300
Factor Arrows
2102,507,650
Factor Arrows
251,253,825
Factor Arrows
510,250,765
Factor Arrows
52,050,153
Factor Arrows
7292,879

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, 7, 292879

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 5 x 7 x 292,879 = 205,015,300

This can also be written as 22 x 52 x 71 x 292,8791 = 205,015,300

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


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