What is the Least Common Multiple of 61970 and 61981?

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 61970 and 61981 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 61970 and 61981, than apply into the LCM equation.

GCF(61970,61981) = 1
LCM(61970,61981) = ( 61970 × 61981) / 1
LCM(61970,61981) = 3840962570 / 1
LCM(61970,61981) = 3840962570

Least Common Multiple (LCM) of 61970 and 61981 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 61970 and 61981. First we will calculate the prime factors of 61970 and 61981.

Prime Factorization of 61970

Prime Factorization of 61981

Now multiplying the highest exponent prime factors to calculate the LCM of 61970 and 61981.

LCM(61970,61981) = 2¹ × 5¹ × 6197¹ × 61981¹
LCM(61970,61981) = 3840962570