What is the Least Common Multiple of 3951 and 3969?

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 3951 and 3969 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 3951 and 3969, than apply into the LCM equation.

GCF(3951,3969) = 9
LCM(3951,3969) = ( 3951 × 3969) / 9
LCM(3951,3969) = 15681519 / 9
LCM(3951,3969) = 1742391

Least Common Multiple (LCM) of 3951 and 3969 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 3951 and 3969. First we will calculate the prime factors of 3951 and 3969.

Prime Factorization of 3951

Prime Factorization of 3969

Now multiplying the highest exponent prime factors to calculate the LCM of 3951 and 3969.

LCM(3951,3969) = 3⁴ × 439¹ × 7²
LCM(3951,3969) = 1742391