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What is the Least Common Multiple of 1630 and 1644?

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 1630 and 1644 is 1339860.

LCM(1630,1644) = 1339860

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Least Common Multiple of 1630 and 1644 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1630 and 1644, than apply into the LCM equation.

GCF(1630,1644) = 2
LCM(1630,1644) = ( 1630 × 1644) / 2
LCM(1630,1644) = 2679720 / 2
LCM(1630,1644) = 1339860

Least Common Multiple (LCM) of 1630 and 1644 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 1630 and 1644. First we will calculate the prime factors of 1630 and 1644.

Prime Factorization of 1630

Prime factors of 1630 are 2, 5, 163. Prime factorization of 1630 in exponential form is:

1630 = 21 × 51 × 1631

Prime Factorization of 1644

Prime factors of 1644 are 2, 3, 137. Prime factorization of 1644 in exponential form is:

1644 = 22 × 31 × 1371

Now multiplying the highest exponent prime factors to calculate the LCM of 1630 and 1644.

LCM(1630,1644) = 22 × 51 × 1631 × 31 × 1371
LCM(1630,1644) = 1339860