Q: What are the prime factors of the number 254,145,360?

 A: 2, 3, 5, 7, 21611

Why are those the prime factors of the number 254,145,360?

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 254,145,360

254,145,360
Factor Arrows
2127,072,680
Factor Arrows
263,536,340
Factor Arrows
231,768,170
Factor Arrows
215,884,085
Factor Arrows
35,294,695
Factor Arrows
51,058,939
Factor Arrows
7151,277
Factor Arrows
721,611

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, 7, 21611

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 5 x 7 x 7 x 21,611 = 254,145,360

This can also be written as 24 x 31 x 51 x 72 x 21,6111 = 254,145,360

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


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