What is the Least Common Multiple of 64972 and 64990?

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 64972 and 64990 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 64972 and 64990, than apply into the LCM equation.

GCF(64972,64990) = 2
LCM(64972,64990) = ( 64972 × 64990) / 2
LCM(64972,64990) = 4222530280 / 2
LCM(64972,64990) = 2111265140

Least Common Multiple (LCM) of 64972 and 64990 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 64972 and 64990. First we will calculate the prime factors of 64972 and 64990.

Prime Factorization of 64972

Prime Factorization of 64990

Now multiplying the highest exponent prime factors to calculate the LCM of 64972 and 64990.

LCM(64972,64990) = 2² × 37¹ × 439¹ × 5¹ × 67¹ × 97¹
LCM(64972,64990) = 2111265140