What is the Least Common Multiple of 61970 and 61986?

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 61986 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 61986, than apply into the LCM equation.

GCF(61970,61986) = 2
LCM(61970,61986) = ( 61970 × 61986) / 2
LCM(61970,61986) = 3841272420 / 2
LCM(61970,61986) = 1920636210

Least Common Multiple (LCM) of 61970 and 61986 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 61970 and 61986. First we will calculate the prime factors of 61970 and 61986.

Prime Factorization of 61970

Prime Factorization of 61986

Now multiplying the highest exponent prime factors to calculate the LCM of 61970 and 61986.

LCM(61970,61986) = 2¹ × 5¹ × 6197¹ × 3¹ × 10331¹
LCM(61970,61986) = 1920636210