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What is the Least Common Multiple of 7923 and 7940?

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 7923 and 7940 is 62908620.

LCM(7923,7940) = 62908620

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Least Common Multiple of 7923 and 7940 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 7923 and 7940, than apply into the LCM equation.

GCF(7923,7940) = 1
LCM(7923,7940) = ( 7923 × 7940) / 1
LCM(7923,7940) = 62908620 / 1
LCM(7923,7940) = 62908620

Least Common Multiple (LCM) of 7923 and 7940 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 7923 and 7940. First we will calculate the prime factors of 7923 and 7940.

Prime Factorization of 7923

Prime factors of 7923 are 3, 19, 139. Prime factorization of 7923 in exponential form is:

7923 = 31 × 191 × 1391

Prime Factorization of 7940

Prime factors of 7940 are 2, 5, 397. Prime factorization of 7940 in exponential form is:

7940 = 22 × 51 × 3971

Now multiplying the highest exponent prime factors to calculate the LCM of 7923 and 7940.

LCM(7923,7940) = 31 × 191 × 1391 × 22 × 51 × 3971
LCM(7923,7940) = 62908620