Greatest Common Factor of 30, 61, 21, 822

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

• Greatest Common Factor of 30, 61, 21, 822 by common division method
• Greatest Common Factor of 30, 61, 21, 822 with matching the biggest common factor

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∴ GCF of numbers is 1 because of no common factors present between them.

Factors of 30

List of positive integer factors of 30 that divides 30 without a remainder.

1,2,3,5,6,10,15,30

Factors of 61

List of positive integer factors of 61 that divides 61 without a remainder.

1,61

Factors of 21

List of positive integer factors of 21 that divides 21 without a remainder.

1,3,7,21

Factors of 822

List of positive integer factors of 822 that divides 822 without a remainder.

1,2,3,6,137,274,411,822

Greatest Common Factor

We found the factors 30,61,21,822 . The biggest common factor number is the GCF number.
So the greatest common factor 30,61,21,822 is 1.

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

• GCF of 27, 24, 75, 468
• GCF of 54, 76, 50, 377
• GCF of 59, 56, 24, 695
• GCF of 14, 95, 57, 593
• GCF of 66, 66, 58, 976

1. What is the GCF of 30, 61, 21, 822?

Answer: GCF of 30, 61, 21, 822 is 1.

2. How to Find the GCF of 30, 61, 21, 822

Answer: Greatest Common Factor(GCF) of 30, 61, 21, 822 = 1

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

Step 2: Then multiply all the prime factors GCF(30, 61, 21, 822) = 1.