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# What are the first two common factors of 3 and 5?

Updated: 9/20/2023 Wiki User

12y ago

Since 3 and 5 are both prime numbers, the only common factor of the two numbers is 1. Perhaps you are thinking of common multiples, the first two common multiples of the two numbers are 15 and 30. Wiki User

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Q: What are the first two common factors of 3 and 5?
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### What are the first three common factors of 9 and 21?

9 and 21 only have two common factors: 1 and 3.

### What Is The Two Lowest Common Factors Of 30 And 3?

Common factors of 30 and 3 are: 1 and 3.

### What is the two common factors of 48 and 63?

The common factors are: 1, 3

### 3 4 5 first three common factors?

first three common factors of 3,4,5

### What are that three common factors of 33 and 30?

Sorry, only two common factors! The common factors are: 1, 3

### Are 18 and 36 the first two factors of 6 and 9?

No. 18 and 36 are the two smallest common multiples of 6 and 9.The factors of 6 are 1, 2, 3, and 6 .The factors of 9 are 1, 3, and 9 .

### What is the greatest common factor of 9and18 and 21?

The greatest common factor is 3: Factors of 9: 1, 3, 9 Factors of 18: 1, 2, 3, 6, 9, 18 Factors of 21: 1, 3, 7, 21 The two common factors are 1 and 3 and the greatest of these two is 3.

### How many common factors of 27 and 57?

27 and 57 have two common factors: 1, 3.

### What are the prime factors in common of 18 and 90?

The prime factors of 18 are 2, 3, and 3. The prime factors of 90 are 2, 3, 3, and 5. The prime factors they have in common are 2, 3, and 3. Since 18 is a factor of 90, its prime factors will be the prime factors that the two numbers have in common.

### What are the common factors and greatest common factor of 3?

There is neither a greatest common factor nor common factors of a single number, such as 3, because there cannot be any form of common factor without two or more numbers to compare. Common factors are factors that the numbers being compared have in common. The greatest common factor is the largest factor that all the numbers being compared have in common. Thus, since there are not two or more numbers to compare, there are neither common factors nor a greatest common factor. The factors of 3 are 1 and 3. The prime factor of 3 is 3. Examples: The common factors of 3 and 20 are only 1; the greatest common factor is 1. The common factors of 3 and 81 are 1 and 3; the greatest common factor is 3.

### What are the greatest common factors of 45 and 81?

Short answer: There are none. There is neither a greatest common factor nor common factors of a single number, such as 81, because there cannot be any form of common factor without two or more numbers to compare. Common factors are factors that the numbers being compared have in common. The greatest common factor is the largest factor that all the numbers being compared have in common. Thus, since there are not two or more numbers to compare, there are neither common factors nor a greatest common factor. The factors of 81 are 1, 3, 9, 27, and 81. Examples: The common factors of 18 and 81 are 1, 3, and 9; the greatest common factor is 9. The common factors of 20 and 81 are only 1; the greatest common factor is 1. The common factors of 39 and 81 are 1 and 3; the greatest common factor is 3. The common factors of 81 and 243 are 1, 3, 9, 27, and 81; the greatest common factor is 81.

### What are the first common factors of 99 and 33?

Common factors of 99 and 33 are: 1, 3, 11, and 33.