Greatest Common Factor of 81, 42, 129

Greatest common factor or Greatest common divisor (GCD) can be calculated in two ways

• Greatest Common Factor of 81, 42, 129 by common division method
• Greatest Common Factor of 81, 42, 129 with matching the biggest common factor

Maximum 4 Number can be enter but you can reset

∴ So the GCF of the given numbers is 3 = 3

Factors of 81

List of positive integer factors of 81 that divides 81 without a remainder.

1,3,9,27,81

Factors of 42

List of positive integer factors of 42 that divides 42 without a remainder.

1,2,3,6,7,14,21,42

Factors of 129

List of positive integer factors of 129 that divides 129 without a remainder.

1,3,43,129

Greatest Common Factor

We found the factors 81,42,129 . The biggest common factor number is the GCF number.
So the greatest common factor 81,42,129 is 3.

Here are some samples of GCF of two or more Numbers calculations.

• GCF of 87, 61, 157
• GCF of 29, 64, 849
• GCF of 41, 36, 382
• GCF of 80, 61, 392
• GCF of 42, 93, 480

1. What is the GCF of 81, 42, 129?

Answer: GCF of 81, 42, 129 is 3.

2. How to Find the GCF of 81, 42, 129

Answer: Greatest Common Factor(GCF) of 81, 42, 129 = 3

Step 1: Divide all the numbers with common prime numbers having remainder zero.

Step 2: Then multiply all the prime factors GCF(81, 42, 129) = 3.