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What is the Least Common Multiple of 1624 and 1636?

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 1624 and 1636 is 664216.

LCM(1624,1636) = 664216

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Least Common Multiple of 1624 and 1636 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1624 and 1636, than apply into the LCM equation.

GCF(1624,1636) = 4
LCM(1624,1636) = ( 1624 × 1636) / 4
LCM(1624,1636) = 2656864 / 4
LCM(1624,1636) = 664216

Least Common Multiple (LCM) of 1624 and 1636 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 1624 and 1636. First we will calculate the prime factors of 1624 and 1636.

Prime Factorization of 1624

Prime factors of 1624 are 2, 7, 29. Prime factorization of 1624 in exponential form is:

1624 = 23 × 71 × 291

Prime Factorization of 1636

Prime factors of 1636 are 2, 409. Prime factorization of 1636 in exponential form is:

1636 = 22 × 4091

Now multiplying the highest exponent prime factors to calculate the LCM of 1624 and 1636.

LCM(1624,1636) = 23 × 71 × 291 × 4091
LCM(1624,1636) = 664216