GCF of 991/257, 990/245
Reviewed By : Phani Ponnapalli
Last Updated at : Mar 29,2023
Use our free GCF of Fractions Calculator tool to compute the GCF of 991/257, 990/245 i.e 1/62965 easily. The following is the detailed procedure to determine the greatest common factor of fractions 991/257, 990/245.
Enter two or more fractions separated by "commas"
Ex: 2/3, 5/7 or 3/5, 5/9, 7/3
What is the GCF of 991/257,990/245?
Given fractions are 991/257,990/245
To find the GCF of fractions, we have to find the GCF of numerator numbers and LCM of denominator numbers. Its formula is given by
GCF of Fraction = Greatest Common Factor of Numerator/Least Common Multiple of Denominators
In the fractions 991/257,990/245, numerators are 991,990
Denominators are 257,245
The GCF of 991,990 is 1 .
LCM of 257,245 is 62965.
The greatest common factor of 991/257,990/245 = [GCF of 991,990]/[LCM of 257,245]= 1/62965
Therefore, the GCF of 991/257,990/245 is 1/62965.
To find the highest common factor of 991,990, we have to find the factors of both numbers and list the highest common factor.
The factors of 991 are 1, 991
The factors of 990 are 1, 2, 3, 5, 6, 9, 10, 11, 15, 18, 22, 30, 33, 45, 55, 66, 90, 99, 110, 165, 198, 330, 495, 990
The HCF of 991,990 is 1.
Lets's calculate GCF of 991,990
∴ So GCF of numbers is 1 because of no common factors present between them.
Greatest Common Factor of 991,990 By Matching Biggest Common Factor Method
Now, list down the factors of 991
:1,991
Now, list down the factors of 990
:1,2,3,5,6,9,10,11,15,18,22,30,33,45,55,66,90,99,110,165,198,330,495,990
Greatest Common Factor
We found the factors 991,990 . The biggest common factor number is the GCF number.
So the greatest common factor 991,990 is 1.
Lets's calculate LCM of 257,245
Given numbers has no common factors except 1. So, there LCM is their product i.e 62965
Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 1/62965
Therefore, the GCF of Fractions 991/257,990/245 is 1/62965
Least Common Multiple of 257,245 with GCF Formula
The formula of LCM is LCM(a1,a2,a3....,an) = ( a1 × a2 × a3 × .... × an) / GCF(a1,a2,a3....,an) x common factors(if more than 2 numbers have common factors).
We need to calculate greatest common factor of 257,245 and common factors if more than two numbers have common factor, than apply into the LCM equation.
GCF(257,245) = 1
common factors(in case of two or more numbers have common factors) = 1
GCF(257,245) x common factors =1 x 1 = 1
LCM(257,245) = ( 257 × 245 ) / 1
LCM(257,245) = 62965 / 1
LCM(257,245) = 62965
GCF of Fractions Calculation Examples
Here are some samples of GCF of Fractions calculations.
FAQs on GCF of Fractions of 991/257, 990/245
1. What is the HCF of 991,990?
The HCF of 991,990 is 1
2. What is the GCF of a fraction?
The GCF of a fraction is defined as the greatest fraction that divides exactly into 2 or more fractions.
3. How to find GCF in Fractions?
Answer: GCF of fractions can be found using the simple formula GCF of Fractions = GCF of Numerators/LCM of Denominators.
4. What is the GCF of Fractions for 991/257, 990/245?
Answer: GCF of Numerators as per given numbers 991/257, 990/245 is
GCF of Numerators i.e. for 991,990 is 1
LCM of denominators i.e. for 257,245 is 62965.
Thus, GCF of Fractions is 1/62965.Finally, GCF of Fractions for 991/257, 990/245 is 1/62965.