What is the Least Common Multiple of 81930 and 81942?

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 81930 and 81942 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 81930 and 81942, than apply into the LCM equation.

GCF(81930,81942) = 6
LCM(81930,81942) = ( 81930 × 81942) / 6
LCM(81930,81942) = 6713508060 / 6
LCM(81930,81942) = 1118918010

Least Common Multiple (LCM) of 81930 and 81942 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 81930 and 81942. First we will calculate the prime factors of 81930 and 81942.

Prime Factorization of 81930

Prime Factorization of 81942

Now multiplying the highest exponent prime factors to calculate the LCM of 81930 and 81942.

LCM(81930,81942) = 2¹ × 3¹ × 5¹ × 2731¹ × 7¹ × 1951¹
LCM(81930,81942) = 1118918010