Q: What are the prime factors of the number 144,621,654?

 A: 2, 3, 19, 23, 2903

Why are those the prime factors of the number 144,621,654?

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 144,621,654

144,621,654
Factor Arrows
272,310,827
Factor Arrows
324,103,609
Factor Arrows
191,268,611
Factor Arrows
1966,769
Factor Arrows
232,903

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, 19, 23, 2903

We can check our work by multiplying all of the prime factors together: 2 x 3 x 19 x 19 x 23 x 2,903 = 144,621,654

This can also be written as 21 x 31 x 192 x 231 x 2,9031 = 144,621,654

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


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