Greatest Common Factor of 21, 68, 98, 705

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

• Greatest Common Factor of 21, 68, 98, 705 by common division method
• Greatest Common Factor of 21, 68, 98, 705 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 21

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

1,3,7,21

Factors of 68

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

1,2,4,17,34,68

Factors of 98

List of positive integer factors of 98 that divides 98 without a remainder.

1,2,7,14,49,98

Factors of 705

List of positive integer factors of 705 that divides 705 without a remainder.

1,3,5,15,47,141,235,705

Greatest Common Factor

We found the factors 21,68,98,705 . The biggest common factor number is the GCF number.
So the greatest common factor 21,68,98,705 is 1.

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

• GCF of 14, 73, 21, 489
• GCF of 58, 50, 78, 490
• GCF of 92, 72, 70, 887
• GCF of 23, 96, 52, 898
• GCF of 51, 98, 10, 744

1. What is the GCF of 21, 68, 98, 705?

Answer: GCF of 21, 68, 98, 705 is 1.

2. How to Find the GCF of 21, 68, 98, 705

Answer: Greatest Common Factor(GCF) of 21, 68, 98, 705 = 1

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

Step 2: Then multiply all the prime factors GCF(21, 68, 98, 705) = 1.