What is the Least Common Multiple of 20956 and 20961?

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 20956 and 20961 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 20956 and 20961, than apply into the LCM equation.

GCF(20956,20961) = 1
LCM(20956,20961) = ( 20956 × 20961) / 1
LCM(20956,20961) = 439258716 / 1
LCM(20956,20961) = 439258716

Least Common Multiple (LCM) of 20956 and 20961 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 20956 and 20961. First we will calculate the prime factors of 20956 and 20961.

Prime Factorization of 20956

Prime Factorization of 20961

Now multiplying the highest exponent prime factors to calculate the LCM of 20956 and 20961.

LCM(20956,20961) = 2² × 13² × 31¹ × 3² × 17¹ × 137¹
LCM(20956,20961) = 439258716