Greatest Common Factor of 42, 40, 68, 693

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

• Greatest Common Factor of 42, 40, 68, 693 by common division method
• Greatest Common Factor of 42, 40, 68, 693 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 42

List of positive integer factors of 42 that divides 42 without a remainder.

1,2,3,6,7,14,21,42

Factors of 40

List of positive integer factors of 40 that divides 40 without a remainder.

1,2,4,5,8,10,20,40

Factors of 68

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

1,2,4,17,34,68

Factors of 693

List of positive integer factors of 693 that divides 693 without a remainder.

1,3,7,9,11,21,33,63,77,99,231,693

Greatest Common Factor

We found the factors 42,40,68,693 . The biggest common factor number is the GCF number.
So the greatest common factor 42,40,68,693 is 1.

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

• GCF of 78, 58, 77, 691
• GCF of 62, 21, 51, 934
• GCF of 21, 97, 53, 429
• GCF of 70, 41, 22, 649
• GCF of 42, 51, 91, 519

1. What is the GCF of 42, 40, 68, 693?

Answer: GCF of 42, 40, 68, 693 is 1.

2. How to Find the GCF of 42, 40, 68, 693

Answer: Greatest Common Factor(GCF) of 42, 40, 68, 693 = 1

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

Step 2: Then multiply all the prime factors GCF(42, 40, 68, 693) = 1.