What is the Least Common Multiple of 75760 and 75765?

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 75760 and 75765 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 75760 and 75765, than apply into the LCM equation.

GCF(75760,75765) = 5
LCM(75760,75765) = ( 75760 × 75765) / 5
LCM(75760,75765) = 5739956400 / 5
LCM(75760,75765) = 1147991280

Least Common Multiple (LCM) of 75760 and 75765 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 75760 and 75765. First we will calculate the prime factors of 75760 and 75765.

Prime Factorization of 75760

Prime Factorization of 75765

Now multiplying the highest exponent prime factors to calculate the LCM of 75760 and 75765.

LCM(75760,75765) = 2⁴ × 5¹ × 947¹ × 3¹ × 5051¹
LCM(75760,75765) = 1147991280