What is the Least Common Multiple of 42940 and 42946?

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 of 42940 and 42946 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 42940 and 42946, than apply into the LCM equation.

GCF(42940,42946) = 2
LCM(42940,42946) = ( 42940 × 42946) / 2
LCM(42940,42946) = 1844101240 / 2
LCM(42940,42946) = 922050620

Least Common Multiple (LCM) of 42940 and 42946 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 42940 and 42946. First we will calculate the prime factors of 42940 and 42946.

Prime Factorization of 42940

Prime Factorization of 42946

Now multiplying the highest exponent prime factors to calculate the LCM of 42940 and 42946.

LCM(42940,42946) = 2² × 5¹ × 19¹ × 113¹ × 109¹ × 197¹
LCM(42940,42946) = 922050620