What is the Least Common Multiple of 12520 and 12540?

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 12520 and 12540 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 12520 and 12540, than apply into the LCM equation.

GCF(12520,12540) = 20
LCM(12520,12540) = ( 12520 × 12540) / 20
LCM(12520,12540) = 157000800 / 20
LCM(12520,12540) = 7850040

Least Common Multiple (LCM) of 12520 and 12540 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 12520 and 12540. First we will calculate the prime factors of 12520 and 12540.

Prime Factorization of 12520

Prime Factorization of 12540

Now multiplying the highest exponent prime factors to calculate the LCM of 12520 and 12540.

LCM(12520,12540) = 2³ × 5¹ × 313¹ × 3¹ × 11¹ × 19¹
LCM(12520,12540) = 7850040