What is the Least Common Multiple of 20943 and 20956?

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 20943 and 20956 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 20943 and 20956, than apply into the LCM equation.

GCF(20943,20956) = 13
LCM(20943,20956) = ( 20943 × 20956) / 13
LCM(20943,20956) = 438881508 / 13
LCM(20943,20956) = 33760116

Least Common Multiple (LCM) of 20943 and 20956 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 20943 and 20956. First we will calculate the prime factors of 20943 and 20956.

Prime Factorization of 20943

Prime Factorization of 20956

Now multiplying the highest exponent prime factors to calculate the LCM of 20943 and 20956.

LCM(20943,20956) = 3² × 13² × 179¹ × 2² × 31¹
LCM(20943,20956) = 33760116