Q: What are the prime factors of the number 254,137,400?

 A: 2, 5, 11, 71, 1627

Why are those the prime factors of the number 254,137,400?

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 254,137,400

254,137,400
Factor Arrows
2127,068,700
Factor Arrows
263,534,350
Factor Arrows
231,767,175
Factor Arrows
56,353,435
Factor Arrows
51,270,687
Factor Arrows
11115,517
Factor Arrows
711,627

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, 11, 71, 1627

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 5 x 5 x 11 x 71 x 1,627 = 254,137,400

This can also be written as 23 x 52 x 111 x 711 x 1,6271 = 254,137,400

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


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