Greatest Common Factor of 221, 420, 705

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

• Greatest Common Factor of 221, 420, 705 by common division method
• Greatest Common Factor of 221, 420, 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 221

List of positive integer factors of 221 that divides 221 without a remainder.

1,13,17,221

Factors of 420

List of positive integer factors of 420 that divides 420 without a remainder.

1,2,3,4,5,6,7,10,12,14,15,20,21,28,30,35,42,60,70,84,105,140,210,420

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 221,420,705 . The biggest common factor number is the GCF number.
So the greatest common factor 221,420,705 is 1.

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

• GCF of 612, 890, 847
• GCF of 959, 451, 674
• GCF of 399, 493, 233
• GCF of 421, 454, 288
• GCF of 509, 112, 310

1. What is the GCF of 221, 420, 705?

Answer: GCF of 221, 420, 705 is 1.

2. How to Find the GCF of 221, 420, 705

Answer: Greatest Common Factor(GCF) of 221, 420, 705 = 1

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

Step 2: Then multiply all the prime factors GCF(221, 420, 705) = 1.