Q: What are the prime factors of the number 254,562,638?

 A: 2, 11, 29, 31, 61, 211

Why are those the prime factors of the number 254,562,638?

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 254,562,638

254,562,638
Factor Arrows
2127,281,319
Factor Arrows
1111,571,029
Factor Arrows
29399,001
Factor Arrows
3112,871
Factor Arrows
61211

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, 11, 29, 31, 61, 211

We can check our work by multiplying all of the prime factors together: 2 x 11 x 29 x 31 x 61 x 211 = 254,562,638

This can also be written as 21 x 111 x 291 x 311 x 611 x 2111 = 254,562,638

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


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