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What is the Least Common Multiple of 65420 and 65430?

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 65420 and 65430 is 428043060.

LCM(65420,65430) = 428043060

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Least Common Multiple of 65420 and 65430 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 65420 and 65430, than apply into the LCM equation.

GCF(65420,65430) = 10
LCM(65420,65430) = ( 65420 × 65430) / 10
LCM(65420,65430) = 4280430600 / 10
LCM(65420,65430) = 428043060

Least Common Multiple (LCM) of 65420 and 65430 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 65420 and 65430. First we will calculate the prime factors of 65420 and 65430.

Prime Factorization of 65420

Prime factors of 65420 are 2, 5, 3271. Prime factorization of 65420 in exponential form is:

65420 = 22 × 51 × 32711

Prime Factorization of 65430

Prime factors of 65430 are 2, 3, 5, 727. Prime factorization of 65430 in exponential form is:

65430 = 21 × 32 × 51 × 7271

Now multiplying the highest exponent prime factors to calculate the LCM of 65420 and 65430.

LCM(65420,65430) = 22 × 51 × 32711 × 32 × 7271
LCM(65420,65430) = 428043060