Online GCD Calculator is useful to find the GCD of 642, 691, 689, 763 quickly. Get the easiest ways to solve the greatest common divisor of 642, 691, 689, 763 i.e 1 in different methods as follows.
Given Input numbers are 642, 691, 689, 763
In the factoring method, we have to find the divisors of all numbers
Divisors of 642 :
The positive integer divisors of 642 that completely divides 642 are.
1, 2, 3, 6, 107, 214, 321, 642
Divisors of 691 :
The positive integer divisors of 691 that completely divides 691 are.
1, 691
Divisors of 689 :
The positive integer divisors of 689 that completely divides 689 are.
1, 13, 53, 689
Divisors of 763 :
The positive integer divisors of 763 that completely divides 763 are.
1, 7, 109, 763
GCD of numbers is the greatest common divisor
So, the GCD (642, 691, 689, 763) = 1.
Given numbers are 642, 691, 689, 763
The list of prime factors of all numbers are
Prime factors of 642 are 2 x 3 x 107
Prime factors of 691 are 691
Prime factors of 689 are 13 x 53
Prime factors of 763 are 7 x 109
The above numbers do not have any common prime factor. So GCD is 1
Given numbers are 642, 691, 689, 763
GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)
Apply this formula for all numbers.
Step1:
LCM(642, 691) = 443622
GCD(642, 691) = ( 642 x 691 ) / 443622
= 642 / 691
= 642
Step2:
LCM(1, 689) = 689
GCD(1, 689) = ( 1 x 689 ) / 689
= 1 / 689
= 1
Step3:
LCM(1, 763) = 763
GCD(1, 763) = ( 1 x 763 ) / 763
= 1 / 763
= 1
So, Greatest Common Divisor of 642, 691, 689, 763 is 1
Here are some samples of GCD of Numbers calculations.
Given numbers are 642, 691, 689, 763
The greatest common divisor of numbers 642, 691, 689, 763 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 642, 691, 689, 763 is 1.
1. What is the GCD of 642, 691, 689, 763?
GCD of given numbers 642, 691, 689, 763 is 1
2. How to calculate the greatest common divisor of 642, 691, 689, 763?
We can find the highest common divisor of 642, 691, 689, 763 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 642, 691, 689, 763 i.e 1.
3. How can I use the GCD of 642, 691, 689, 763Calculator?
Out the numbers 642, 691, 689, 763 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.