What is the Least Common Multiple of 71557 and 71561?

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 71557 and 71561 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 71557 and 71561, than apply into the LCM equation.

GCF(71557,71561) = 1
LCM(71557,71561) = ( 71557 × 71561) / 1
LCM(71557,71561) = 5120690477 / 1
LCM(71557,71561) = 5120690477

Least Common Multiple (LCM) of 71557 and 71561 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 71557 and 71561. First we will calculate the prime factors of 71557 and 71561.

Prime Factorization of 71557

Prime Factorization of 71561

Now multiplying the highest exponent prime factors to calculate the LCM of 71557 and 71561.

LCM(71557,71561) = 163¹ × 439¹ × 7¹ × 10223¹
LCM(71557,71561) = 5120690477