What is the Least Common Multiple of 1171 and 1191?

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 1171 and 1191 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1171 and 1191, than apply into the LCM equation.

GCF(1171,1191) = 1
LCM(1171,1191) = ( 1171 × 1191) / 1
LCM(1171,1191) = 1394661 / 1
LCM(1171,1191) = 1394661

Least Common Multiple (LCM) of 1171 and 1191 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 1171 and 1191. First we will calculate the prime factors of 1171 and 1191.

Prime Factorization of 1171

Prime Factorization of 1191

Now multiplying the highest exponent prime factors to calculate the LCM of 1171 and 1191.

LCM(1171,1191) = 1171¹ × 3¹ × 397¹
LCM(1171,1191) = 1394661