Greatest Common Factor of 77, 30, 21, 157

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

• Greatest Common Factor of 77, 30, 21, 157 by common division method
• Greatest Common Factor of 77, 30, 21, 157 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 77

List of positive integer factors of 77 that divides 77 without a remainder.

1,7,11,77

Factors of 30

List of positive integer factors of 30 that divides 30 without a remainder.

1,2,3,5,6,10,15,30

Factors of 21

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

1,3,7,21

Factors of 157

List of positive integer factors of 157 that divides 157 without a remainder.

1,157

Greatest Common Factor

We found the factors 77,30,21,157 . The biggest common factor number is the GCF number.
So the greatest common factor 77,30,21,157 is 1.

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

• GCF of 24, 57, 77, 234
• GCF of 84, 92, 24, 994
• GCF of 96, 15, 86, 263
• GCF of 30, 82, 42, 506
• GCF of 18, 63, 15, 557

1. What is the GCF of 77, 30, 21, 157?

Answer: GCF of 77, 30, 21, 157 is 1.

2. How to Find the GCF of 77, 30, 21, 157

Answer: Greatest Common Factor(GCF) of 77, 30, 21, 157 = 1

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

Step 2: Then multiply all the prime factors GCF(77, 30, 21, 157) = 1.