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What is the Least Common Multiple of 12770 and 12788?

Least common multiple or lowest common denominator (lcd) can be calculated in two way; with the LCM formula calculation of greatest common factor (GCF), or multiplying the prime factors with the highest exponent factor.

Least common multiple (LCM) of 12770 and 12788 is 81651380.

LCM(12770,12788) = 81651380

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Least Common Multiple of 12770 and 12788 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 12770 and 12788, than apply into the LCM equation.

GCF(12770,12788) = 2
LCM(12770,12788) = ( 12770 × 12788) / 2
LCM(12770,12788) = 163302760 / 2
LCM(12770,12788) = 81651380

Least Common Multiple (LCM) of 12770 and 12788 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 12770 and 12788. First we will calculate the prime factors of 12770 and 12788.

Prime Factorization of 12770

Prime factors of 12770 are 2, 5, 1277. Prime factorization of 12770 in exponential form is:

12770 = 21 × 51 × 12771

Prime Factorization of 12788

Prime factors of 12788 are 2, 23, 139. Prime factorization of 12788 in exponential form is:

12788 = 22 × 231 × 1391

Now multiplying the highest exponent prime factors to calculate the LCM of 12770 and 12788.

LCM(12770,12788) = 22 × 51 × 12771 × 231 × 1391
LCM(12770,12788) = 81651380