GCD of 158, 668, 680, 721 Calculator

Given Input numbers are 158, 668, 680, 721

In the factoring method, we have to find the divisors of all numbers

Divisors of 158 :

The positive integer divisors of 158 that completely divides 158 are.

1, 2, 79, 158

Divisors of 668 :

The positive integer divisors of 668 that completely divides 668 are.

1, 2, 4, 167, 334, 668

Divisors of 680 :

The positive integer divisors of 680 that completely divides 680 are.

1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680

Divisors of 721 :

The positive integer divisors of 721 that completely divides 721 are.

1, 7, 103, 721

GCD of numbers is the greatest common divisor

So, the GCD (158, 668, 680, 721) = 1.

Given numbers are 158, 668, 680, 721

The list of prime factors of all numbers are

Prime factors of 158 are 2 x 79

Prime factors of 668 are 2 x 2 x 167

Prime factors of 680 are 2 x 2 x 2 x 5 x 17

Prime factors of 721 are 7 x 103

The above numbers do not have any common prime factor. So GCD is 1

Given numbers are 158, 668, 680, 721

GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)

Apply this formula for all numbers.

Step1:

LCM(158, 668) = 52772

GCD(158, 668) = ( 158 x 668 ) / 52772

= 158 / 668

= 158

Step2:

LCM(2, 680) = 680

GCD(2, 680) = ( 2 x 680 ) / 680

= 2 / 680

= 2

Step3:

LCM(2, 721) = 1442

GCD(2, 721) = ( 2 x 721 ) / 1442

= 2 / 721

= 2

So, Greatest Common Divisor of 158, 668, 680, 721 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 161, 132, 625, 825
• GCD of 953, 633, 565, 535
• GCD of 718, 205, 735, 477
• GCD of 775, 949, 415, 901
• GCD of 739, 392, 678, 355

Given numbers are 158, 668, 680, 721
The greatest common divisor of numbers 158, 668, 680, 721 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 158, 668, 680, 721 is 1.

1. What is the GCD of 158, 668, 680, 721?

GCD of given numbers 158, 668, 680, 721 is 1

2. How to calculate the greatest common divisor of 158, 668, 680, 721?

We can find the highest common divisor of 158, 668, 680, 721 easily using the prime factorization method. Just list the prime factors of all numbers and pick the highest common factor which is the GCD of 158, 668, 680, 721 i.e 1.

3. How can I use the GCD of 158, 668, 680, 721Calculator?

Out the numbers 158, 668, 680, 721 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.