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What is the Least Common Multiple of 91220 and 91228?

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 91220 and 91228 is 2080454540.

LCM(91220,91228) = 2080454540

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Least Common Multiple of 91220 and 91228 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 91220 and 91228, than apply into the LCM equation.

GCF(91220,91228) = 4
LCM(91220,91228) = ( 91220 × 91228) / 4
LCM(91220,91228) = 8321818160 / 4
LCM(91220,91228) = 2080454540

Least Common Multiple (LCM) of 91220 and 91228 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 91220 and 91228. First we will calculate the prime factors of 91220 and 91228.

Prime Factorization of 91220

Prime factors of 91220 are 2, 5, 4561. Prime factorization of 91220 in exponential form is:

91220 = 22 × 51 × 45611

Prime Factorization of 91228

Prime factors of 91228 are 2, 22807. Prime factorization of 91228 in exponential form is:

91228 = 22 × 228071

Now multiplying the highest exponent prime factors to calculate the LCM of 91220 and 91228.

LCM(91220,91228) = 22 × 51 × 45611 × 228071
LCM(91220,91228) = 2080454540