What is the Least Common Multiple of 67540 and 67556?

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 67540 and 67556 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 67540 and 67556, than apply into the LCM equation.

GCF(67540,67556) = 4
LCM(67540,67556) = ( 67540 × 67556) / 4
LCM(67540,67556) = 4562732240 / 4
LCM(67540,67556) = 1140683060

Least Common Multiple (LCM) of 67540 and 67556 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 67540 and 67556. First we will calculate the prime factors of 67540 and 67556.

Prime Factorization of 67540

Prime Factorization of 67556

Now multiplying the highest exponent prime factors to calculate the LCM of 67540 and 67556.

LCM(67540,67556) = 2² × 5¹ × 11¹ × 307¹ × 16889¹
LCM(67540,67556) = 1140683060