Q: What are the prime factors of the number 61,544,154?

 A: 2, 3, 7, 19, 233, 331

Why are those the prime factors of the number 61,544,154?

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 61,544,154

61,544,154
Factor Arrows
230,772,077
Factor Arrows
310,257,359
Factor Arrows
71,465,337
Factor Arrows
1977,123
Factor Arrows
233331

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, 19, 233, 331

We can check our work by multiplying all of the prime factors together: 2 x 3 x 7 x 19 x 233 x 331 = 61,544,154

This can also be written as 21 x 31 x 71 x 191 x 2331 x 3311 = 61,544,154

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


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