What is the Least Common Multiple of 30540 and 30560?

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 30540 and 30560 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 30540 and 30560, than apply into the LCM equation.

GCF(30540,30560) = 20
LCM(30540,30560) = ( 30540 × 30560) / 20
LCM(30540,30560) = 933302400 / 20
LCM(30540,30560) = 46665120

Least Common Multiple (LCM) of 30540 and 30560 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 30540 and 30560. First we will calculate the prime factors of 30540 and 30560.

Prime Factorization of 30540

Prime Factorization of 30560

Now multiplying the highest exponent prime factors to calculate the LCM of 30540 and 30560.

LCM(30540,30560) = 2⁵ × 3¹ × 5¹ × 509¹ × 191¹
LCM(30540,30560) = 46665120