Question by Lê Quốc Trần Anh - Discuss with MathYouLike

Lê Quốc Trần Anh Coordinator

15/11/2017 at 17:05

The prime factorization of 75 is written, without exponents, as 3 × 5 × 5. The sum of the prime factors is 3 + 5 + 5 = 13. For how many whole numbers is the sum of each number's prime factors, without exponents, equal to 13?

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Nguyễn Hưng Phát 16/11/2017 at 12:35

We have: 13 =2+11=3+10=5+8=7+6=13+0=3 +3 +7

So the number need find is:3 x 3 x 7=63

Answer:63
Lê Quốc Trần Anh selected this answer.
Bảo Bình 15/11/2017 at 19:27

Chúng ta có: 13 =2+11=3+10=5+8=7+6=13+0=3 +3 +7

So the number need find is:3 x 3 x 7=63

Answer:63

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