What is the Least Common Multiple of 2161 and 2169?

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 2161 and 2169 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 2161 and 2169, than apply into the LCM equation.

GCF(2161,2169) = 1
LCM(2161,2169) = ( 2161 × 2169) / 1
LCM(2161,2169) = 4687209 / 1
LCM(2161,2169) = 4687209

Least Common Multiple (LCM) of 2161 and 2169 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 2161 and 2169. First we will calculate the prime factors of 2161 and 2169.

Prime Factorization of 2161

Prime Factorization of 2169

Now multiplying the highest exponent prime factors to calculate the LCM of 2161 and 2169.

LCM(2161,2169) = 2161¹ × 3² × 241¹
LCM(2161,2169) = 4687209