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What is the Least Common Multiple of 68421 and 68430?

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 68421 and 68430 is 1560683010.

LCM(68421,68430) = 1560683010

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Least Common Multiple of 68421 and 68430 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 68421 and 68430, than apply into the LCM equation.

GCF(68421,68430) = 3
LCM(68421,68430) = ( 68421 × 68430) / 3
LCM(68421,68430) = 4682049030 / 3
LCM(68421,68430) = 1560683010

Least Common Multiple (LCM) of 68421 and 68430 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 68421 and 68430. First we will calculate the prime factors of 68421 and 68430.

Prime Factorization of 68421

Prime factors of 68421 are 3, 22807. Prime factorization of 68421 in exponential form is:

68421 = 31 × 228071

Prime Factorization of 68430

Prime factors of 68430 are 2, 3, 5, 2281. Prime factorization of 68430 in exponential form is:

68430 = 21 × 31 × 51 × 22811

Now multiplying the highest exponent prime factors to calculate the LCM of 68421 and 68430.

LCM(68421,68430) = 31 × 228071 × 21 × 51 × 22811
LCM(68421,68430) = 1560683010