What is the Least Common Multiple of 81646 and 81656?

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 81646 and 81656 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 81646 and 81656, than apply into the LCM equation.

GCF(81646,81656) = 2
LCM(81646,81656) = ( 81646 × 81656) / 2
LCM(81646,81656) = 6666885776 / 2
LCM(81646,81656) = 3333442888

Least Common Multiple (LCM) of 81646 and 81656 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 81646 and 81656. First we will calculate the prime factors of 81646 and 81656.

Prime Factorization of 81646

Prime Factorization of 81656

Now multiplying the highest exponent prime factors to calculate the LCM of 81646 and 81656.

LCM(81646,81656) = 2³ × 40823¹ × 59¹ × 173¹
LCM(81646,81656) = 3333442888