Q: What are the prime factors of the number 25,220,300?

 A: 2, 5, 7, 5147

Why are those the prime factors of the number 25,220,300?

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 25,220,300

25,220,300
Factor Arrows
212,610,150
Factor Arrows
26,305,075
Factor Arrows
51,261,015
Factor Arrows
5252,203
Factor Arrows
736,029
Factor Arrows
75,147

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, 5147

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 5 x 7 x 7 x 5,147 = 25,220,300

This can also be written as 22 x 52 x 72 x 5,1471 = 25,220,300

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


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