GCD of 991, 643, 276, 690 Calculator

Given Input numbers are 991, 643, 276, 690

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

Divisors of 991 :

The positive integer divisors of 991 that completely divides 991 are.

1, 991

Divisors of 643 :

The positive integer divisors of 643 that completely divides 643 are.

1, 643

Divisors of 276 :

The positive integer divisors of 276 that completely divides 276 are.

1, 2, 3, 4, 6, 12, 23, 46, 69, 92, 138, 276

Divisors of 690 :

The positive integer divisors of 690 that completely divides 690 are.

1, 2, 3, 5, 6, 10, 15, 23, 30, 46, 69, 115, 138, 230, 345, 690

GCD of numbers is the greatest common divisor

So, the GCD (991, 643, 276, 690) = 1.

Given numbers are 991, 643, 276, 690

The list of prime factors of all numbers are

Prime factors of 991 are 991

Prime factors of 643 are 643

Prime factors of 276 are 2 x 2 x 3 x 23

Prime factors of 690 are 2 x 3 x 5 x 23

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

Given numbers are 991, 643, 276, 690

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

Apply this formula for all numbers.

Step1:

LCM(991, 643) = 637213

GCD(991, 643) = ( 991 x 643 ) / 637213

= 991 / 643

= 991

Step2:

LCM(1, 276) = 276

GCD(1, 276) = ( 1 x 276 ) / 276

= 1 / 276

= 1

Step3:

LCM(1, 690) = 690

GCD(1, 690) = ( 1 x 690 ) / 690

= 1 / 690

= 1

So, Greatest Common Divisor of 991, 643, 276, 690 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 287, 467, 526, 233
• GCD of 163, 563, 264, 511
• GCD of 387, 281, 672, 103
• GCD of 407, 193, 184, 883
• GCD of 363, 895, 749, 597

Given numbers are 991, 643, 276, 690
The greatest common divisor of numbers 991, 643, 276, 690 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 991, 643, 276, 690 is 1.

1. What is the GCD of 991, 643, 276, 690?

GCD of given numbers 991, 643, 276, 690 is 1

2. How to calculate the greatest common divisor of 991, 643, 276, 690?

We can find the highest common divisor of 991, 643, 276, 690 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 991, 643, 276, 690 i.e 1.

3. How can I use the GCD of 991, 643, 276, 690Calculator?

Out the numbers 991, 643, 276, 690 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.