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What is the Least Common Multiple of 64978 and 64991?

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 64978 and 64991 is 4222985198.

LCM(64978,64991) = 4222985198

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Least Common Multiple of 64978 and 64991 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 64978 and 64991, than apply into the LCM equation.

GCF(64978,64991) = 1
LCM(64978,64991) = ( 64978 × 64991) / 1
LCM(64978,64991) = 4222985198 / 1
LCM(64978,64991) = 4222985198

Least Common Multiple (LCM) of 64978 and 64991 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 64978 and 64991. First we will calculate the prime factors of 64978 and 64991.

Prime Factorization of 64978

Prime factors of 64978 are 2, 53, 613. Prime factorization of 64978 in exponential form is:

64978 = 21 × 531 × 6131

Prime Factorization of 64991

Prime factors of 64991 are 17, 3823. Prime factorization of 64991 in exponential form is:

64991 = 171 × 38231

Now multiplying the highest exponent prime factors to calculate the LCM of 64978 and 64991.

LCM(64978,64991) = 21 × 531 × 6131 × 171 × 38231
LCM(64978,64991) = 4222985198