What is the Least Common Multiple of 7945 and 7965?

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 7945 and 7965 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 7945 and 7965, than apply into the LCM equation.

GCF(7945,7965) = 5
LCM(7945,7965) = ( 7945 × 7965) / 5
LCM(7945,7965) = 63281925 / 5
LCM(7945,7965) = 12656385

Least Common Multiple (LCM) of 7945 and 7965 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 7945 and 7965. First we will calculate the prime factors of 7945 and 7965.

Prime Factorization of 7945

Prime Factorization of 7965

Now multiplying the highest exponent prime factors to calculate the LCM of 7945 and 7965.

LCM(7945,7965) = 5¹ × 7¹ × 227¹ × 3³ × 59¹
LCM(7945,7965) = 12656385