What is the Least Common Multiple of 81991 and 81996?

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 81991 and 81996 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 81991 and 81996, than apply into the LCM equation.

GCF(81991,81996) = 1
LCM(81991,81996) = ( 81991 × 81996) / 1
LCM(81991,81996) = 6722934036 / 1
LCM(81991,81996) = 6722934036

Least Common Multiple (LCM) of 81991 and 81996 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 81991 and 81996. First we will calculate the prime factors of 81991 and 81996.

Prime Factorization of 81991

Prime Factorization of 81996

Now multiplying the highest exponent prime factors to calculate the LCM of 81991 and 81996.

LCM(81991,81996) = 7¹ × 13¹ × 17¹ × 53¹ × 2² × 3¹ × 6833¹
LCM(81991,81996) = 6722934036