What is the Least Common Multiple of 38972 and 38990?

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 38972 and 38990 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 38972 and 38990, than apply into the LCM equation.

GCF(38972,38990) = 2
LCM(38972,38990) = ( 38972 × 38990) / 2
LCM(38972,38990) = 1519518280 / 2
LCM(38972,38990) = 759759140

Least Common Multiple (LCM) of 38972 and 38990 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 38972 and 38990. First we will calculate the prime factors of 38972 and 38990.

Prime Factorization of 38972

Prime Factorization of 38990

Now multiplying the highest exponent prime factors to calculate the LCM of 38972 and 38990.

LCM(38972,38990) = 2² × 9743¹ × 5¹ × 7¹ × 557¹
LCM(38972,38990) = 759759140