Q: What are the prime factors of the number 154,512,000?

 A: 2, 3, 5, 29, 37

Why are those the prime factors of the number 154,512,000?

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 154,512,000

154,512,000
Factor Arrows
277,256,000
Factor Arrows
238,628,000
Factor Arrows
219,314,000
Factor Arrows
29,657,000
Factor Arrows
24,828,500
Factor Arrows
22,414,250
Factor Arrows
21,207,125
Factor Arrows
3402,375
Factor Arrows
3134,125
Factor Arrows
526,825
Factor Arrows
55,365
Factor Arrows
51,073
Factor Arrows
2937

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, 5, 29, 37

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 3 x 3 x 5 x 5 x 5 x 29 x 37 = 154,512,000

This can also be written as 27 x 32 x 53 x 291 x 371 = 154,512,000

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


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