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2 and 5 are, but 9 isnt because its factors are 1,3,and 9

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Q: Are 2 5 and 9 prime?
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Factors of 225 and 144?

The prime factors of 144 are 2, 2, 2, 2, 3 and 3 The prime factors of 225 are 3, 3, 5 and 5 The only prime numbers which are common to both are 3 and 3 ... 9


What is the LCM of 12 9 and 15?

To find the Least Common Multiple (LCM) of 12, 9, and 15, we first need to find the prime factorization of each number. The prime factorization of 12 is 2^2 * 3, the prime factorization of 9 is 3^2, and the prime factorization of 15 is 3 * 5. To find the LCM, we take the highest power of each prime factor that appears in any of the numbers: 2^2 * 3^2 * 5 = 180. Therefore, the LCM of 12, 9, and 15 is 180.


What is the LCM of 3 5 9 and 13?

To find the Least Common Multiple (LCM) of 3, 5, 9, and 13, you first need to find the prime factorization of each number. The prime factorization of 3 is 3, 5 is 5, 9 is 3^2, and 13 is itself. Then, you take the highest power of each prime that appears in the factorizations, which gives you 3^2 * 5 * 13 = 585. Therefore, the LCM of 3, 5, 9, and 13 is 585.


How many prime numbers are in 200?

The prime factors of 200 are 2 and 5 or as a product of its prime factors 2*2*2*5*5 = 200


What is a number less than 50 with only 2 prime factors?

The following numbers less than 50 have 2 prime factors. Some are squares, having two of the same prime factor. Some have two different prime factors. The prime factors of 4 are 2 and 2. The prime factors of 6 are 2 and 3. The prime factors of 9 are 3 and 3. The prime factors of 10 are 2 and 5. The prime factors of 14 are 2 and 7. The prime factors of 15 are 3 and 5. The prime factors of 21 are 3 and 7. The prime factors of 22 are 2 and 11. The prime factors of 25 are 5 and 5. The prime factors of 26 are 2 and 13. The prime factors of 33 are 3 and 11. The prime factors of 34 are 2 and 17. The prime factors of 35 are 5 and 7. The prime factors of 38 are 2 and 19. The prime factors of 39 are 3 and 13. The prime factors of 46 are 2 and 23. The prime factors of 49 are 7 and 7.