Q: What are the prime factors of the number 254,021,625?

 A: 3, 5, 11, 13, 1579

Why are those the prime factors of the number 254,021,625?

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 254,021,625

254,021,625
Factor Arrows
384,673,875
Factor Arrows
328,224,625
Factor Arrows
55,644,925
Factor Arrows
51,128,985
Factor Arrows
5225,797
Factor Arrows
1120,527
Factor Arrows
131,579

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:

3, 5, 11, 13, 1579

We can check our work by multiplying all of the prime factors together: 3 x 3 x 5 x 5 x 5 x 11 x 13 x 1,579 = 254,021,625

This can also be written as 32 x 53 x 111 x 131 x 1,5791 = 254,021,625

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


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