Greatest Common Factor of 67, 78, 21, 21, 624

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

• Greatest Common Factor of 67, 78, 21, 21, 624 by common division method
• Greatest Common Factor of 67, 78, 21, 21, 624 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 67

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

1,67

Factors of 78

List of positive integer factors of 78 that divides 78 without a remainder.

1,2,3,6,13,26,39,78

Factors of 21

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

1,3,7,21

Factors of 21

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

1,3,7,21

Factors of 624

List of positive integer factors of 624 that divides 624 without a remainder.

1,2,3,4,6,8,12,13,16,24,26,39,48,52,78,104,156,208,312,624

Greatest Common Factor

We found the factors 67,78,21,21,624 . The biggest common factor number is the GCF number.
So the greatest common factor 67,78,21,21,624 is 1.

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

• GCF of 51, 28, 68, 18, 586
• GCF of 75, 95, 89, 44, 831
• GCF of 79, 79, 54, 48, 280
• GCF of 28, 63, 38, 24, 506
• GCF of 23, 31, 18, 35, 630

1. What is the GCF of 67, 78, 21, 21, 624?

Answer: GCF of 67, 78, 21, 21, 624 is 1.

2. How to Find the GCF of 67, 78, 21, 21, 624

Answer: Greatest Common Factor(GCF) of 67, 78, 21, 21, 624 = 1

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

Step 2: Then multiply all the prime factors GCF(67, 78, 21, 21, 624) = 1.