GCF of 645/991, 580/398
Reviewed By : Phani Ponnapalli
Last Updated at : Mar 29,2023
Use our free GCF of Fractions Calculator tool to compute the GCF of 645/991, 580/398 i.e 5/394418 easily. The following is the detailed procedure to determine the greatest common factor of fractions 645/991, 580/398.
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 645/991,580/398?
Given fractions are 645/991,580/398
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 645/991,580/398, numerators are 645,580
Denominators are 991,398
The GCF of 645,580 is 5 .
LCM of 991,398 is 394418.
The greatest common factor of 645/991,580/398 = [GCF of 645,580]/[LCM of 991,398]= 5/394418
Therefore, the GCF of 645/991,580/398 is 5/394418.
To find the highest common factor of 645,580, we have to find the factors of both numbers and list the highest common factor.
The factors of 645 are 1, 3, 5, 15, 43, 129, 215, 645
The factors of 580 are 1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580
The HCF of 645,580 is 5.
Lets's calculate GCF of 645,580
| 5 | 645, 580 |
| 129, 116 |
∴ So the GCF of the given numbers is 5 = 5
Greatest Common Factor of 645,580 By Matching Biggest Common Factor Method
Now, list down the factors of 645
:1,3,5,15,43,129,215,645
Now, list down the factors of 580
:1,2,4,5,10,20,29,58,116,145,290,580
Greatest Common Factor
We found the factors 645,580 . The biggest common factor number is the GCF number.
So the greatest common factor 645,580 is 5.
Lets's calculate LCM of 991,398
Given numbers has no common factors except 1. So, there LCM is their product i.e 394418
Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 5/394418
Therefore, the GCF of Fractions 645/991,580/398 is 5/394418
Least Common Multiple of 991,398 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 991,398 and common factors if more than two numbers have common factor, than apply into the LCM equation.
GCF(991,398) = 1
common factors(in case of two or more numbers have common factors) = 1
GCF(991,398) x common factors =1 x 1 = 1
LCM(991,398) = ( 991 × 398 ) / 1
LCM(991,398) = 394418 / 1
LCM(991,398) = 394418
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FAQs on GCF of Fractions of 645/991, 580/398
1. What is the HCF of 645,580?
The HCF of 645,580 is 5
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 645/991, 580/398?
Answer: GCF of Numerators as per given numbers 645/991, 580/398 is
GCF of Numerators i.e. for 645,580 is 5
LCM of denominators i.e. for 991,398 is 394418.
Thus, GCF of Fractions is 5/394418.Finally, GCF of Fractions for 645/991, 580/398 is 5/394418.