Greatest Common Factor of 61, 67, 21, 945

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

• Greatest Common Factor of 61, 67, 21, 945 by common division method
• Greatest Common Factor of 61, 67, 21, 945 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 67

List of positive integer factors of 67 that divides 67 without a remainder.

1,67

Factors of 21

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

1,3,7,21

Factors of 945

List of positive integer factors of 945 that divides 945 without a remainder.

1,3,5,7,9,15,21,27,35,45,63,105,135,189,315,945

Greatest Common Factor

We found the factors 61,67,21,945 . The biggest common factor number is the GCF number.
So the greatest common factor 61,67,21,945 is 1.

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

• GCF of 53, 15, 40, 324
• GCF of 65, 51, 88, 405
• GCF of 57, 97, 85, 810
• GCF of 74, 86, 38, 226
• GCF of 89, 65, 95, 167

1. What is the GCF of 61, 67, 21, 945?

Answer: GCF of 61, 67, 21, 945 is 1.

2. How to Find the GCF of 61, 67, 21, 945

Answer: Greatest Common Factor(GCF) of 61, 67, 21, 945 = 1

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

Step 2: Then multiply all the prime factors GCF(61, 67, 21, 945) = 1.