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GCF of 781/390, 513/998

Created By : Veerendra
Reviewed By : Phani Ponnapalli
Last Updated at : Mar 29,2023

Use our free GCF of Fractions Calculator tool to compute the GCF of 781/390, 513/998 i.e 1/194610 easily. The following is the detailed procedure to determine the greatest common factor of fractions 781/390, 513/998.

Enter two or more fractions separated by "commas"

Ex: 2/3, 5/7 or 3/5, 5/9, 7/3

GCF of:

What is the GCF of 781/390,513/998?

Given fractions are 781/390,513/998

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 781/390,513/998, numerators are 781,513

Denominators are 390,998

The GCF of 781,513 is 1 .

LCM of 390,998 is 194610.

The greatest common factor of 781/390,513/998 = [GCF of 781,513]/[LCM of 390,998]= 1/194610

Therefore, the GCF of 781/390,513/998 is 1/194610.

Greatest Common Factor of 781,513

To find the highest common factor of 781,513, we have to find the factors of both numbers and list the highest common factor.

The factors of 781 are 1, 11, 71, 781

The factors of 513 are 1, 3, 9, 19, 27, 57, 171, 513

The HCF of 781,513 is 1.

Lets's calculate GCF of 781,513

Greatest Common Factor (GCF) of 781,513 By Common Division

∴ So GCF of numbers is 1 because of no common factors present between them.

Greatest Common Factor of 781,513 By Matching Biggest Common Factor Method

Greatest Common Factor of 781,513 By Matching Biggest Common Factor Method

Now, list down the factors of 781

:

1,11,71,781

Now, list down the factors of 513

:

1,3,9,19,27,57,171,513

Greatest Common Factor

We found the factors 781,513 . The biggest common factor number is the GCF number.
So the greatest common factor 781,513 is 1.

Lets's calculate LCM of 390,998

Lowest Common Multiple of 390,998 using Common Division

2 390, 998
195, 499

∴ So the LCM of the given numbers is 2 x 195 x 499 = 194610

Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 1/194610

Therefore, the GCF of Fractions 781/390,513/998 is 1/194610

Least Common Multiple of 390,998 with GCF Formula

Least Common Multiple of 390,998 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 390,998 and common factors if more than two numbers have common factor, than apply into the LCM equation.

GCF(390,998) = 2

common factors(in case of two or more numbers have common factors) = 1

GCF(390,998) x common factors =2 x 1 = 2

LCM(390,998) = ( 390 × 998 ) / 2

LCM(390,998) = 389220 / 2

LCM(390,998) = 194610


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FAQs on GCF of Fractions of 781/390, 513/998

1. What is the HCF of 781,513?

The HCF of 781,513 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 781/390, 513/998?

Answer: GCF of Numerators as per given numbers 781/390, 513/998 is

GCF of Numerators i.e. for 781,513 is 1

LCM of denominators i.e. for 390,998 is 194610.

Thus, GCF of Fractions is 1/194610.Finally, GCF of Fractions for 781/390, 513/998 is 1/194610.