What is the Least Common Multiple of 79940 and 79956?

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 79940 and 79956 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 79940 and 79956, than apply into the LCM equation.

GCF(79940,79956) = 4
LCM(79940,79956) = ( 79940 × 79956) / 4
LCM(79940,79956) = 6391682640 / 4
LCM(79940,79956) = 1597920660

Least Common Multiple (LCM) of 79940 and 79956 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 79940 and 79956. First we will calculate the prime factors of 79940 and 79956.

Prime Factorization of 79940

Prime Factorization of 79956

Now multiplying the highest exponent prime factors to calculate the LCM of 79940 and 79956.

LCM(79940,79956) = 2² × 5¹ × 7¹ × 571¹ × 3² × 2221¹
LCM(79940,79956) = 1597920660