What is the Least Common Multiple of 91981 and 91999?

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 91981 and 91999 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 91981 and 91999, than apply into the LCM equation.

GCF(91981,91999) = 1
LCM(91981,91999) = ( 91981 × 91999) / 1
LCM(91981,91999) = 8462160019 / 1
LCM(91981,91999) = 8462160019

Least Common Multiple (LCM) of 91981 and 91999 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 91981 and 91999. First we will calculate the prime factors of 91981 and 91999.

Prime Factorization of 91981

Prime Factorization of 91999

Now multiplying the highest exponent prime factors to calculate the LCM of 91981 and 91999.

LCM(91981,91999) = 59¹ × 1559¹ × 197¹ × 467¹
LCM(91981,91999) = 8462160019