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What is the Least Common Multiple of 80556 and 80560?

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 80556 and 80560 is 1622397840.

LCM(80556,80560) = 1622397840

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Least Common Multiple of 80556 and 80560 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 80556 and 80560, than apply into the LCM equation.

GCF(80556,80560) = 4
LCM(80556,80560) = ( 80556 × 80560) / 4
LCM(80556,80560) = 6489591360 / 4
LCM(80556,80560) = 1622397840

Least Common Multiple (LCM) of 80556 and 80560 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 80556 and 80560. First we will calculate the prime factors of 80556 and 80560.

Prime Factorization of 80556

Prime factors of 80556 are 2, 3, 7, 137. Prime factorization of 80556 in exponential form is:

80556 = 22 × 31 × 72 × 1371

Prime Factorization of 80560

Prime factors of 80560 are 2, 5, 19, 53. Prime factorization of 80560 in exponential form is:

80560 = 24 × 51 × 191 × 531

Now multiplying the highest exponent prime factors to calculate the LCM of 80556 and 80560.

LCM(80556,80560) = 24 × 31 × 72 × 1371 × 51 × 191 × 531
LCM(80556,80560) = 1622397840