What is the Least Common Multiple of 6540 and 6557?

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 6540 and 6557 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 6540 and 6557, than apply into the LCM equation.

GCF(6540,6557) = 1
LCM(6540,6557) = ( 6540 × 6557) / 1
LCM(6540,6557) = 42882780 / 1
LCM(6540,6557) = 42882780

Least Common Multiple (LCM) of 6540 and 6557 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 6540 and 6557. First we will calculate the prime factors of 6540 and 6557.

Prime Factorization of 6540

Prime Factorization of 6557

Now multiplying the highest exponent prime factors to calculate the LCM of 6540 and 6557.

LCM(6540,6557) = 2² × 3¹ × 5¹ × 109¹ × 79¹ × 83¹
LCM(6540,6557) = 42882780