What is the Least Common Multiple of 42655 and 42661?

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 42655 and 42661 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 42655 and 42661, than apply into the LCM equation.

GCF(42655,42661) = 1
LCM(42655,42661) = ( 42655 × 42661) / 1
LCM(42655,42661) = 1819704955 / 1
LCM(42655,42661) = 1819704955

Least Common Multiple (LCM) of 42655 and 42661 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 42655 and 42661. First we will calculate the prime factors of 42655 and 42661.

Prime Factorization of 42655

Prime Factorization of 42661

Now multiplying the highest exponent prime factors to calculate the LCM of 42655 and 42661.

LCM(42655,42661) = 5¹ × 19¹ × 449¹ × 37¹ × 1153¹
LCM(42655,42661) = 1819704955