Greatest Common Factor of 68, 15, 60, 61, 20

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

• Greatest Common Factor of 68, 15, 60, 61, 20 by common division method
• Greatest Common Factor of 68, 15, 60, 61, 20 with matching the biggest common factor

Maximum 4 Number can be enter but you can reset

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

Factors of 68

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

1,2,4,17,34,68

Factors of 15

List of positive integer factors of 15 that divides 15 without a remainder.

1,3,5,15

Factors of 60

List of positive integer factors of 60 that divides 60 without a remainder.

1,2,3,4,5,6,10,12,15,20,30,60

Factors of 61

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

1,61

Factors of 20

List of positive integer factors of 20 that divides 20 without a remainder.

1,2,4,5,10,20

Greatest Common Factor

We found the factors 68,15,60,61,20 . The biggest common factor number is the GCF number.
So the greatest common factor 68,15,60,61,20 is 1.

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

• GCF of 17, 60, 69, 81, 61
• GCF of 39, 64, 91, 10, 86
• GCF of 64, 31, 28, 97, 86
• GCF of 99, 84, 80, 92, 82
• GCF of 85, 49, 97, 91, 43

1. What is the GCF of 68, 15, 60, 61, 20?

Answer: GCF of 68, 15, 60, 61, 20 is 1.

2. How to Find the GCF of 68, 15, 60, 61, 20

Answer: Greatest Common Factor(GCF) of 68, 15, 60, 61, 20 = 1

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

Step 2: Then multiply all the prime factors GCF(68, 15, 60, 61, 20) = 1.