Greatest Common Factor of 61, 68, 58, 33, 21

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

• Greatest Common Factor of 61, 68, 58, 33, 21 by common division method
• Greatest Common Factor of 61, 68, 58, 33, 21 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 61

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

1,61

Factors of 68

List of positive integer factors of 68 that divides 68 without a remainder.

1,2,4,17,34,68

Factors of 58

List of positive integer factors of 58 that divides 58 without a remainder.

1,2,29,58

Factors of 33

List of positive integer factors of 33 that divides 33 without a remainder.

1,3,11,33

Factors of 21

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

1,3,7,21

Greatest Common Factor

We found the factors 61,68,58,33,21 . The biggest common factor number is the GCF number.
So the greatest common factor 61,68,58,33,21 is 1.

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

• GCF of 61, 91, 73, 87, 61
• GCF of 39, 92, 14, 74, 68
• GCF of 74, 48, 44, 34, 35
• GCF of 14, 96, 32, 85, 21
• GCF of 23, 46, 39, 76, 38

1. What is the GCF of 61, 68, 58, 33, 21?

Answer: GCF of 61, 68, 58, 33, 21 is 1.

2. How to Find the GCF of 61, 68, 58, 33, 21

Answer: Greatest Common Factor(GCF) of 61, 68, 58, 33, 21 = 1

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

Step 2: Then multiply all the prime factors GCF(61, 68, 58, 33, 21) = 1.