What is the Least Common Multiple of 61439 and 61445?

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 61439 and 61445 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 61439 and 61445, than apply into the LCM equation.

GCF(61439,61445) = 1
LCM(61439,61445) = ( 61439 × 61445) / 1
LCM(61439,61445) = 3775119355 / 1
LCM(61439,61445) = 3775119355

Least Common Multiple (LCM) of 61439 and 61445 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 61439 and 61445. First we will calculate the prime factors of 61439 and 61445.

Prime Factorization of 61439

Prime Factorization of 61445

Now multiplying the highest exponent prime factors to calculate the LCM of 61439 and 61445.

LCM(61439,61445) = 7¹ × 67¹ × 131¹ × 5¹ × 12289¹
LCM(61439,61445) = 3775119355