What is the Least Common Multiple of 81870 and 81884?

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 81870 and 81884 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 81870 and 81884, than apply into the LCM equation.

GCF(81870,81884) = 2
LCM(81870,81884) = ( 81870 × 81884) / 2
LCM(81870,81884) = 6703843080 / 2
LCM(81870,81884) = 3351921540

Least Common Multiple (LCM) of 81870 and 81884 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 81870 and 81884. First we will calculate the prime factors of 81870 and 81884.

Prime Factorization of 81870

Prime Factorization of 81884

Now multiplying the highest exponent prime factors to calculate the LCM of 81870 and 81884.

LCM(81870,81884) = 2² × 3¹ × 5¹ × 2729¹ × 11¹ × 1861¹
LCM(81870,81884) = 3351921540