Best Answer

They both have the number 1 as one of their digits.

Also, they both have 1 and 3 as factors.

Q: What number do 12 and 81 have in common?

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.12

the number 9

81 9 48 144 12

The Greatest Common Divisor of two numbers is the largest number that will divide into both evenly. For example, although 27 and 81 are both divisible by 3, it wouldn't be the greatest common divisor, because 27 divides into 81 evenly as well: the greatest common divisor of 27 and 81 is 27.

81 is not prime it's a composite number

Related questions

The GCF of 12 and 81 is 3.

No, it does not.

It is: 324

A common multiple of 9, 81 and 45 is 32805. This is not the least such number.

.12

It is: 3

the number 9

3

There is an infinite number of common multiples for 13 and 81. A common multiple of any two or more numbers is any number into which each of two or more numbers can be divided evenly (zero remainder). However, the least or lowest common multiple of 13 and 81 is 1,053.

Answer: 9Definition: A factor is a divisor - a number that will evenly divide into another number. The greatest common factor of two or more numbers is the largest factor that the numbers have in common.Method:One way to determine the common factors and greatest common factor is to find all the factors of the numbers and compare them.The factors of 9 are 1, 3, and 9.The factors of 36 are 1, 2, 3, 4, 6, 9, 12, 18, and 36.The factors of 81 are 1, 3, 9, 27, and 81.The common factors are 1, 3, and 9. Therefore, the greatest common factor is 9.The GCF is 9.The GCF is 9.

The GCF is 1.

The factors of 81 are 1, 3, 9, 27, and 81. The factors of 36 are 1, 2, 3, 4, 6, 9, 12, 18, and 36. The common factors of 81 and 36 are 1, 3, and 9.