What is the Least Common Multiple of 3520 and 3530?

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 3520 and 3530 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 3520 and 3530, than apply into the LCM equation.

GCF(3520,3530) = 10
LCM(3520,3530) = ( 3520 × 3530) / 10
LCM(3520,3530) = 12425600 / 10
LCM(3520,3530) = 1242560

Least Common Multiple (LCM) of 3520 and 3530 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 3520 and 3530. First we will calculate the prime factors of 3520 and 3530.

Prime Factorization of 3520

Prime Factorization of 3530

Now multiplying the highest exponent prime factors to calculate the LCM of 3520 and 3530.

LCM(3520,3530) = 2⁶ × 5¹ × 11¹ × 353¹
LCM(3520,3530) = 1242560