What is the Least Common Multiple of 19561 and 19565?

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 19561 and 19565 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 19561 and 19565, than apply into the LCM equation.

GCF(19561,19565) = 1
LCM(19561,19565) = ( 19561 × 19565) / 1
LCM(19561,19565) = 382710965 / 1
LCM(19561,19565) = 382710965

Least Common Multiple (LCM) of 19561 and 19565 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 19561 and 19565. First we will calculate the prime factors of 19561 and 19565.

Prime Factorization of 19561

Prime Factorization of 19565

Now multiplying the highest exponent prime factors to calculate the LCM of 19561 and 19565.

LCM(19561,19565) = 31¹ × 631¹ × 5¹ × 7¹ × 13¹ × 43¹
LCM(19561,19565) = 382710965