GCF and LCM Calculator Logo

What is the Least Common Multiple of 1545 and 1556?

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 (LCM) of 1545 and 1556 is 2404020.

LCM(1545,1556) = 2404020

LCM Calculator and
and

Least Common Multiple of 1545 and 1556 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1545 and 1556, than apply into the LCM equation.

GCF(1545,1556) = 1
LCM(1545,1556) = ( 1545 × 1556) / 1
LCM(1545,1556) = 2404020 / 1
LCM(1545,1556) = 2404020

Least Common Multiple (LCM) of 1545 and 1556 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 1545 and 1556. First we will calculate the prime factors of 1545 and 1556.

Prime Factorization of 1545

Prime factors of 1545 are 3, 5, 103. Prime factorization of 1545 in exponential form is:

1545 = 31 × 51 × 1031

Prime Factorization of 1556

Prime factors of 1556 are 2, 389. Prime factorization of 1556 in exponential form is:

1556 = 22 × 3891

Now multiplying the highest exponent prime factors to calculate the LCM of 1545 and 1556.

LCM(1545,1556) = 31 × 51 × 1031 × 22 × 3891
LCM(1545,1556) = 2404020