What is the Least Common Multiple of 81561 and 81581?

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 81561 and 81581 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 81561 and 81581, than apply into the LCM equation.

GCF(81561,81581) = 1
LCM(81561,81581) = ( 81561 × 81581) / 1
LCM(81561,81581) = 6653827941 / 1
LCM(81561,81581) = 6653827941

Least Common Multiple (LCM) of 81561 and 81581 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 81561 and 81581. First we will calculate the prime factors of 81561 and 81581.

Prime Factorization of 81561

Prime Factorization of 81581

Now multiplying the highest exponent prime factors to calculate the LCM of 81561 and 81581.

LCM(81561,81581) = 3¹ × 31¹ × 877¹ × 23¹ × 3547¹
LCM(81561,81581) = 6653827941