What is the Least Common Multiple of 53978 and 53990?

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 53978 and 53990 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 53978 and 53990, than apply into the LCM equation.

GCF(53978,53990) = 2
LCM(53978,53990) = ( 53978 × 53990) / 2
LCM(53978,53990) = 2914272220 / 2
LCM(53978,53990) = 1457136110

Least Common Multiple (LCM) of 53978 and 53990 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 53978 and 53990. First we will calculate the prime factors of 53978 and 53990.

Prime Factorization of 53978

Prime Factorization of 53990

Now multiplying the highest exponent prime factors to calculate the LCM of 53978 and 53990.

LCM(53978,53990) = 2¹ × 137¹ × 197¹ × 5¹ × 5399¹
LCM(53978,53990) = 1457136110