What is the Least Common Multiple of 11961 and 11980?

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 11961 and 11980 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 11961 and 11980, than apply into the LCM equation.

GCF(11961,11980) = 1
LCM(11961,11980) = ( 11961 × 11980) / 1
LCM(11961,11980) = 143292780 / 1
LCM(11961,11980) = 143292780

Least Common Multiple (LCM) of 11961 and 11980 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 11961 and 11980. First we will calculate the prime factors of 11961 and 11980.

Prime Factorization of 11961

Prime Factorization of 11980

Now multiplying the highest exponent prime factors to calculate the LCM of 11961 and 11980.

LCM(11961,11980) = 3³ × 443¹ × 2² × 5¹ × 599¹
LCM(11961,11980) = 143292780