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What is the Least Common Multiple of 7752 and 7761?

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 7752 and 7761 is 20054424.

LCM(7752,7761) = 20054424

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Least Common Multiple of 7752 and 7761 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 7752 and 7761, than apply into the LCM equation.

GCF(7752,7761) = 3
LCM(7752,7761) = ( 7752 × 7761) / 3
LCM(7752,7761) = 60163272 / 3
LCM(7752,7761) = 20054424

Least Common Multiple (LCM) of 7752 and 7761 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 7752 and 7761. First we will calculate the prime factors of 7752 and 7761.

Prime Factorization of 7752

Prime factors of 7752 are 2, 3, 17, 19. Prime factorization of 7752 in exponential form is:

7752 = 23 × 31 × 171 × 191

Prime Factorization of 7761

Prime factors of 7761 are 3, 13, 199. Prime factorization of 7761 in exponential form is:

7761 = 31 × 131 × 1991

Now multiplying the highest exponent prime factors to calculate the LCM of 7752 and 7761.

LCM(7752,7761) = 23 × 31 × 171 × 191 × 131 × 1991
LCM(7752,7761) = 20054424