What's the GCF of 72 and 81?

The GCF of 72 and 81 is 9. To calculate the greatest common factor (GCF) of 72 and 81, we need to factor each number (factors of 72 = 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72; factors of 81 = 1, 3, 9, 27, 81) and choose the greatest factor that exactly divides both 72 and 81, i.e., 9.

What is the GCF of 81?

Answer: Factors of 81 are 1, 3, 9, 27, 81. There are 5 integers that are factors of 81. The greatest factor of 81 is 81.

How do you find the GCF of 72?

What is the factors of 81?

No, 6 is not a factor of 81 since the factors of 81 are 1, 3, 9, 27, and 81.

What is the GCF of 72 and 80?

Answer: GCF of 72 and 80 is 8.

HCF of 72 and 81|GCF of 72 and 81

What are the factors of 72?

Factors of 72: 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36 and 72.

What is the LCM of 72 and 80?

As seen on the calculation above, we have now obtained the LCM of 72 and 80. The Least Common Multiple of 72 and 80 is 720.

What are the prime factors of 72?

For example, we can write the number 72 as a product of prime factors: 72 = 2 3 ⋅ 3 2 . The expression 2 3 ⋅ 3 2 is said to be the prime factorization of 72.

What are the multiples of 81?

The first 5 multiples of 81 are 81, 162, 243, 324, 405. The sum of the first 5 multiples of 81 is 1215 and the average of the first 5 multiples of 81 is 243. Multiples of 81: 81, 162, 243, 324, 405, 486, 567, 648, 729, 810 and so on.

How do you find the highest common factor of 72 and 84?

GCF of 72 and 84 by Prime Factorization

Prime factorization of 72 and 84 is (2 × 2 × 2 × 3 × 3) and (2 × 2 × 3 × 7) respectively. As visible, 72 and 84 have common prime factors. Hence, the GCF of 72 and 84 is 2 × 2 × 3 = 12.

What is the LCM of 72?

The LCM of 72 and 96 is 288. To find the LCM (least common multiple) of 72 and 96, we need to find the multiples of 72 and 96 (multiples of 72 = 72, 144, 216, 288; multiples of 96 = 96, 192, 288, 384) and choose the smallest multiple that is exactly divisible by 72 and 96, i.e., 288.

How do you get the greatest common factor?

The greatest common factor is the greatest factor that divides both numbers. To find the greatest common factor, first list the prime factors of each number. 18 and 24 share one 2 and one 3 in common. We multiply them to get the GCF, so 2 * 3 = 6 is the GCF of 18 and 24.

What is the GCF of 72 and 48?

The GCF of 48 and 72 is 24. To calculate the greatest common factor of 48 and 72, we need to factor each number (factors of 48 = 1, 2, 3, 4, 6, 8, 12, 16, 24, 48; factors of 72 = 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72) and choose the greatest factor that exactly divides both 48 and 72, i.e., 24.

What is the GCF of 32 and 72?

GCF of 32 and 72 by Listing Common Factors

Therefore, the greatest common factor of 32 and 72 is 8.

What is the GCF 81 and 18?

The GCF of 18 and 81 is 9. To calculate the GCF (Greatest Common Factor) of 18 and 81, we need to factor each number (factors of 18 = 1, 2, 3, 6, 9, 18; factors of 81 = 1, 3, 9, 27, 81) and choose the greatest factor that exactly divides both 18 and 81, i.e., 9.

What are the multiples of 72?

The multiples of 72 are 72, 144, 216, 288, 360, 432, 504, and so on. The common multiples of 72 and 24 are 72, 144, 216, 288, 360, and so on.

What is the factor pairs of 81?

The factors of 81 are 1, 3, 9, 27, and 81. All the different pair combinations from the factors of 81 above are the Factor Pairs of 81. Below is the list of all the Factor Pairs of 81. As you can see, all Factor Pairs of 81 equal 81 when you multiply them together.

What is the prime factor of 81?

The prime factorization of 81 is 3 × 3 × 3 × 3 = 34. Therefore, the prime factor of 81 is 3, which can be multiplied to get the other factors.

How do you find the lowest common multiple using division?

To find the LCM by division method, we write the given numbers in a row separately by commas, then divide the numbers by a common prime number. We stop dividing after reaching the prime numbers. The product of common and uncommon prime factors is the LCM of given numbers.