GCF and LCM Calculator Logo

What is the Least Common Multiple of 91970 and 91978?

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 91970 and 91978 is 4229608330.

LCM(91970,91978) = 4229608330

LCM Calculator and
and

Least Common Multiple of 91970 and 91978 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 91970 and 91978, than apply into the LCM equation.

GCF(91970,91978) = 2
LCM(91970,91978) = ( 91970 × 91978) / 2
LCM(91970,91978) = 8459216660 / 2
LCM(91970,91978) = 4229608330

Least Common Multiple (LCM) of 91970 and 91978 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 91970 and 91978. First we will calculate the prime factors of 91970 and 91978.

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

Prime Factorization of 91978

Prime factors of 91978 are 2, 45989. Prime factorization of 91978 in exponential form is:

91978 = 21 × 459891

Now multiplying the highest exponent prime factors to calculate the LCM of 91970 and 91978.

LCM(91970,91978) = 21 × 51 × 171 × 5411 × 459891
LCM(91970,91978) = 4229608330