What is the Least Common Multiple of 81940 and 81948?

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 of 81940 and 81948 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 81940 and 81948, than apply into the LCM equation.

GCF(81940,81948) = 4
LCM(81940,81948) = ( 81940 × 81948) / 4
LCM(81940,81948) = 6714819120 / 4
LCM(81940,81948) = 1678704780

Least Common Multiple (LCM) of 81940 and 81948 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 81940 and 81948. First we will calculate the prime factors of 81940 and 81948.

Prime Factorization of 81940

Prime Factorization of 81948

Now multiplying the highest exponent prime factors to calculate the LCM of 81940 and 81948.

LCM(81940,81948) = 2² × 5¹ × 17¹ × 241¹ × 3¹ × 6829¹
LCM(81940,81948) = 1678704780