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What is the Least Common Multiple of 91958 and 91970?

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 91958 and 91970 is 4228688630.

LCM(91958,91970) = 4228688630

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Least Common Multiple of 91958 and 91970 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 91958 and 91970, than apply into the LCM equation.

GCF(91958,91970) = 2
LCM(91958,91970) = ( 91958 × 91970) / 2
LCM(91958,91970) = 8457377260 / 2
LCM(91958,91970) = 4228688630

Least Common Multiple (LCM) of 91958 and 91970 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 91958 and 91970. First we will calculate the prime factors of 91958 and 91970.

Prime Factorization of 91958

Prime factors of 91958 are 2, 45979. Prime factorization of 91958 in exponential form is:

91958 = 21 × 459791

Prime Factorization of 91970

Prime factors of 91970 are 2, 5, 17, 541. Prime factorization of 91970 in exponential form is:

91970 = 21 × 51 × 171 × 5411

Now multiplying the highest exponent prime factors to calculate the LCM of 91958 and 91970.

LCM(91958,91970) = 21 × 459791 × 51 × 171 × 5411
LCM(91958,91970) = 4228688630