What is the Least Common Multiple of 81761 and 81772?

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 81761 and 81772 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 81761 and 81772, than apply into the LCM equation.

GCF(81761,81772) = 1
LCM(81761,81772) = ( 81761 × 81772) / 1
LCM(81761,81772) = 6685760492 / 1
LCM(81761,81772) = 6685760492

Least Common Multiple (LCM) of 81761 and 81772 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 81761 and 81772. First we will calculate the prime factors of 81761 and 81772.

Prime Factorization of 81761

Prime Factorization of 81772

Now multiplying the highest exponent prime factors to calculate the LCM of 81761 and 81772.

LCM(81761,81772) = 81761¹ × 2² × 20443¹
LCM(81761,81772) = 6685760492