What is the Least Common Multiple of 81656 and 81661?

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 81656 and 81661 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 81656 and 81661, than apply into the LCM equation.

GCF(81656,81661) = 1
LCM(81656,81661) = ( 81656 × 81661) / 1
LCM(81656,81661) = 6668110616 / 1
LCM(81656,81661) = 6668110616

Least Common Multiple (LCM) of 81656 and 81661 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 81656 and 81661. First we will calculate the prime factors of 81656 and 81661.

Prime Factorization of 81656

Prime Factorization of 81661

Now multiplying the highest exponent prime factors to calculate the LCM of 81656 and 81661.

LCM(81656,81661) = 2³ × 59¹ × 173¹ × 127¹ × 643¹
LCM(81656,81661) = 6668110616