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What is the Least Common Multiple of 91988 and 91992?

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 91988 and 91992 is 2115540024.

LCM(91988,91992) = 2115540024

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Least Common Multiple of 91988 and 91992 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 91988 and 91992, than apply into the LCM equation.

GCF(91988,91992) = 4
LCM(91988,91992) = ( 91988 × 91992) / 4
LCM(91988,91992) = 8462160096 / 4
LCM(91988,91992) = 2115540024

Least Common Multiple (LCM) of 91988 and 91992 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 91988 and 91992. First we will calculate the prime factors of 91988 and 91992.

Prime Factorization of 91988

Prime factors of 91988 are 2, 13, 29, 61. Prime factorization of 91988 in exponential form is:

91988 = 22 × 131 × 291 × 611

Prime Factorization of 91992

Prime factors of 91992 are 2, 3, 3833. Prime factorization of 91992 in exponential form is:

91992 = 23 × 31 × 38331

Now multiplying the highest exponent prime factors to calculate the LCM of 91988 and 91992.

LCM(91988,91992) = 23 × 131 × 291 × 611 × 31 × 38331
LCM(91988,91992) = 2115540024