Greatest Common Factor of 621, 361, 21

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

• Greatest Common Factor of 621, 361, 21 by common division method
• Greatest Common Factor of 621, 361, 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 621

List of positive integer factors of 621 that divides 621 without a remainder.

1,3,9,23,27,69,207,621

Factors of 361

List of positive integer factors of 361 that divides 361 without a remainder.

1,19,361

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 621,361,21 . The biggest common factor number is the GCF number.
So the greatest common factor 621,361,21 is 1.

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

• GCF of 926, 730, 48
• GCF of 913, 532, 19
• GCF of 644, 227, 12
• GCF of 505, 468, 86
• GCF of 154, 584, 50

1. What is the GCF of 621, 361, 21?

Answer: GCF of 621, 361, 21 is 1.

2. How to Find the GCF of 621, 361, 21

Answer: Greatest Common Factor(GCF) of 621, 361, 21 = 1

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

Step 2: Then multiply all the prime factors GCF(621, 361, 21) = 1.