What is the Least Common Multiple of 20974 and 20991?

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 20974 and 20991 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 20974 and 20991, than apply into the LCM equation.

GCF(20974,20991) = 1
LCM(20974,20991) = ( 20974 × 20991) / 1
LCM(20974,20991) = 440265234 / 1
LCM(20974,20991) = 440265234

Least Common Multiple (LCM) of 20974 and 20991 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 20974 and 20991. First we will calculate the prime factors of 20974 and 20991.

Prime Factorization of 20974

Prime Factorization of 20991

Now multiplying the highest exponent prime factors to calculate the LCM of 20974 and 20991.

LCM(20974,20991) = 2¹ × 10487¹ × 3¹ × 6997¹
LCM(20974,20991) = 440265234