What is the Least Common Multiple of 61987 and 61991?

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 61987 and 61991 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 61987 and 61991, than apply into the LCM equation.

GCF(61987,61991) = 1
LCM(61987,61991) = ( 61987 × 61991) / 1
LCM(61987,61991) = 3842636117 / 1
LCM(61987,61991) = 3842636117

Least Common Multiple (LCM) of 61987 and 61991 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 61987 and 61991. First we will calculate the prime factors of 61987 and 61991.

Prime Factorization of 61987

Prime Factorization of 61991

Now multiplying the highest exponent prime factors to calculate the LCM of 61987 and 61991.

LCM(61987,61991) = 61987¹ × 61991¹
LCM(61987,61991) = 3842636117