What is the Least Common Multiple of 51220 and 51240?

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 51220 and 51240 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 51220 and 51240, than apply into the LCM equation.

GCF(51220,51240) = 20
LCM(51220,51240) = ( 51220 × 51240) / 20
LCM(51220,51240) = 2624512800 / 20
LCM(51220,51240) = 131225640

Least Common Multiple (LCM) of 51220 and 51240 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 51220 and 51240. First we will calculate the prime factors of 51220 and 51240.

Prime Factorization of 51220

Prime Factorization of 51240

Now multiplying the highest exponent prime factors to calculate the LCM of 51220 and 51240.

LCM(51220,51240) = 2³ × 5¹ × 13¹ × 197¹ × 3¹ × 7¹ × 61¹
LCM(51220,51240) = 131225640