What is the Least Common Multiple of 68905 and 68915?

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 68905 and 68915 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 68905 and 68915, than apply into the LCM equation.

GCF(68905,68915) = 5
LCM(68905,68915) = ( 68905 × 68915) / 5
LCM(68905,68915) = 4748588075 / 5
LCM(68905,68915) = 949717615

Least Common Multiple (LCM) of 68905 and 68915 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 68905 and 68915. First we will calculate the prime factors of 68905 and 68915.

Prime Factorization of 68905

Prime Factorization of 68915

Now multiplying the highest exponent prime factors to calculate the LCM of 68905 and 68915.

LCM(68905,68915) = 5¹ × 13781¹ × 7¹ × 11¹ × 179¹
LCM(68905,68915) = 949717615