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What is the Least Common Multiple of 64965 and 64978?

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 64965 and 64978 is 4221295770.

LCM(64965,64978) = 4221295770

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Least Common Multiple of 64965 and 64978 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 64965 and 64978, than apply into the LCM equation.

GCF(64965,64978) = 1
LCM(64965,64978) = ( 64965 × 64978) / 1
LCM(64965,64978) = 4221295770 / 1
LCM(64965,64978) = 4221295770

Least Common Multiple (LCM) of 64965 and 64978 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 64965 and 64978. First we will calculate the prime factors of 64965 and 64978.

Prime Factorization of 64965

Prime factors of 64965 are 3, 5, 61, 71. Prime factorization of 64965 in exponential form is:

64965 = 31 × 51 × 611 × 711

Prime Factorization of 64978

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

64978 = 21 × 531 × 6131

Now multiplying the highest exponent prime factors to calculate the LCM of 64965 and 64978.

LCM(64965,64978) = 31 × 51 × 611 × 711 × 21 × 531 × 6131
LCM(64965,64978) = 4221295770