Q: What are the prime factors of the number 205,220,600?

 A: 2, 5, 13, 17, 4643

Why are those the prime factors of the number 205,220,600?

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 205,220,600

205,220,600
Factor Arrows
2102,610,300
Factor Arrows
251,305,150
Factor Arrows
225,652,575
Factor Arrows
55,130,515
Factor Arrows
51,026,103
Factor Arrows
1378,931
Factor Arrows
174,643

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, 13, 17, 4643

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 5 x 5 x 13 x 17 x 4,643 = 205,220,600

This can also be written as 23 x 52 x 131 x 171 x 4,6431 = 205,220,600

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


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