Online GCD Calculator is useful to find the GCD of 642, 669, 752, 721 quickly. Get the easiest ways to solve the greatest common divisor of 642, 669, 752, 721 i.e 1 in different methods as follows.
Given Input numbers are 642, 669, 752, 721
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 669 :
The positive integer divisors of 669 that completely divides 669 are.
1, 3, 223, 669
Divisors of 752 :
The positive integer divisors of 752 that completely divides 752 are.
1, 2, 4, 8, 16, 47, 94, 188, 376, 752
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 (642, 669, 752, 721) = 1.
Given numbers are 642, 669, 752, 721
The list of prime factors of all numbers are
Prime factors of 642 are 2 x 3 x 107
Prime factors of 669 are 3 x 223
Prime factors of 752 are 2 x 2 x 2 x 2 x 47
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 642, 669, 752, 721
GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)
Apply this formula for all numbers.
Step1:
LCM(642, 669) = 143166
GCD(642, 669) = ( 642 x 669 ) / 143166
= 642 / 669
= 642
Step2:
LCM(3, 752) = 2256
GCD(3, 752) = ( 3 x 752 ) / 2256
= 3 / 752
= 3
Step3:
LCM(1, 721) = 721
GCD(1, 721) = ( 1 x 721 ) / 721
= 1 / 721
= 1
So, Greatest Common Divisor of 642, 669, 752, 721 is 1
Here are some samples of GCD of Numbers calculations.
Given numbers are 642, 669, 752, 721
The greatest common divisor of numbers 642, 669, 752, 721 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 642, 669, 752, 721 is 1.
1. What is the GCD of 642, 669, 752, 721?
GCD of given numbers 642, 669, 752, 721 is 1
2. How to calculate the greatest common divisor of 642, 669, 752, 721?
We can find the highest common divisor of 642, 669, 752, 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 642, 669, 752, 721 i.e 1.
3. How can I use the GCD of 642, 669, 752, 721Calculator?
Out the numbers 642, 669, 752, 721 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.