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What is the Least Common Multiple of 1634 and 1646?

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 1634 and 1646 is 1344782.

LCM(1634,1646) = 1344782

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Least Common Multiple of 1634 and 1646 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1634 and 1646, than apply into the LCM equation.

GCF(1634,1646) = 2
LCM(1634,1646) = ( 1634 × 1646) / 2
LCM(1634,1646) = 2689564 / 2
LCM(1634,1646) = 1344782

Least Common Multiple (LCM) of 1634 and 1646 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 1634 and 1646. First we will calculate the prime factors of 1634 and 1646.

Prime Factorization of 1634

Prime factors of 1634 are 2, 19, 43. Prime factorization of 1634 in exponential form is:

1634 = 21 × 191 × 431

Prime Factorization of 1646

Prime factors of 1646 are 2, 823. Prime factorization of 1646 in exponential form is:

1646 = 21 × 8231

Now multiplying the highest exponent prime factors to calculate the LCM of 1634 and 1646.

LCM(1634,1646) = 21 × 191 × 431 × 8231
LCM(1634,1646) = 1344782