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What is the Least Common Multiple of 91460 and 91478?

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 91460 and 91478 is 4183288940.

LCM(91460,91478) = 4183288940

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Least Common Multiple of 91460 and 91478 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 91460 and 91478, than apply into the LCM equation.

GCF(91460,91478) = 2
LCM(91460,91478) = ( 91460 × 91478) / 2
LCM(91460,91478) = 8366577880 / 2
LCM(91460,91478) = 4183288940

Least Common Multiple (LCM) of 91460 and 91478 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 91460 and 91478. First we will calculate the prime factors of 91460 and 91478.

Prime Factorization of 91460

Prime factors of 91460 are 2, 5, 17, 269. Prime factorization of 91460 in exponential form is:

91460 = 22 × 51 × 171 × 2691

Prime Factorization of 91478

Prime factors of 91478 are 2, 53, 863. Prime factorization of 91478 in exponential form is:

91478 = 21 × 531 × 8631

Now multiplying the highest exponent prime factors to calculate the LCM of 91460 and 91478.

LCM(91460,91478) = 22 × 51 × 171 × 2691 × 531 × 8631
LCM(91460,91478) = 4183288940