What is the Least Common Multiple of 20191 and 20203?

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 20191 and 20203 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 20191 and 20203, than apply into the LCM equation.

GCF(20191,20203) = 1
LCM(20191,20203) = ( 20191 × 20203) / 1
LCM(20191,20203) = 407918773 / 1
LCM(20191,20203) = 407918773

Least Common Multiple (LCM) of 20191 and 20203 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 20191 and 20203. First we will calculate the prime factors of 20191 and 20203.

Prime Factorization of 20191

Prime Factorization of 20203

Now multiplying the highest exponent prime factors to calculate the LCM of 20191 and 20203.

LCM(20191,20203) = 61¹ × 331¹ × 89¹ × 227¹
LCM(20191,20203) = 407918773