Online GCD Calculator is useful to find the GCD of 420, 648, 686, 958 quickly. Get the easiest ways to solve the greatest common divisor of 420, 648, 686, 958 i.e 2 in different methods as follows.
Given Input numbers are 420, 648, 686, 958
In the factoring method, we have to find the divisors of all numbers
Divisors of 420 :
The positive integer divisors of 420 that completely divides 420 are.
1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420
Divisors of 648 :
The positive integer divisors of 648 that completely divides 648 are.
1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 27, 36, 54, 72, 81, 108, 162, 216, 324, 648
Divisors of 686 :
The positive integer divisors of 686 that completely divides 686 are.
1, 2, 7, 14, 49, 98, 343, 686
Divisors of 958 :
The positive integer divisors of 958 that completely divides 958 are.
1, 2, 479, 958
GCD of numbers is the greatest common divisor
So, the GCD (420, 648, 686, 958) = 2.
Given numbers are 420, 648, 686, 958
The list of prime factors of all numbers are
Prime factors of 420 are 2 x 2 x 3 x 5 x 7
Prime factors of 648 are 2 x 2 x 2 x 3 x 3 x 3 x 3
Prime factors of 686 are 2 x 7 x 7 x 7
Prime factors of 958 are 2 x 479
The highest common occurrence is 21
Therefore, GCD of 420, 648, 686, 958 is 2.
Given numbers are 420, 648, 686, 958
GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)
Apply this formula for all numbers.
Step1:
LCM(420, 648) = 22680
GCD(420, 648) = ( 420 x 648 ) / 22680
= 420 / 648
= 420
Step2:
LCM(12, 686) = 4116
GCD(12, 686) = ( 12 x 686 ) / 4116
= 12 / 686
= 12
Step3:
LCM(2, 958) = 958
GCD(2, 958) = ( 2 x 958 ) / 958
= 2 / 958
= 2
So, Greatest Common Divisor of 420, 648, 686, 958 is 2
Here are some samples of GCD of Numbers calculations.
Given numbers are 420, 648, 686, 958
The greatest common divisor of numbers 420, 648, 686, 958 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 420, 648, 686, 958 is 2.
1. What is the GCD of 420, 648, 686, 958?
GCD of given numbers 420, 648, 686, 958 is 2
2. How to calculate the greatest common divisor of 420, 648, 686, 958?
We can find the highest common divisor of 420, 648, 686, 958 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 420, 648, 686, 958 i.e 2.
3. How can I use the GCD of 420, 648, 686, 958Calculator?
Out the numbers 420, 648, 686, 958 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.