Q: What are the prime factors of the number 254,152,542?

 A: 2, 3, 7, 157, 38543

Why are those the prime factors of the number 254,152,542?

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 254,152,542

254,152,542
Factor Arrows
2127,076,271
Factor Arrows
342,358,757
Factor Arrows
76,051,251
Factor Arrows
15738,543

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, 7, 157, 38543

We can check our work by multiplying all of the prime factors together: 2 x 3 x 7 x 157 x 38,543 = 254,152,542

This can also be written as 21 x 31 x 71 x 1571 x 38,5431 = 254,152,542

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


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