What is the Least Common Multiple of 6991 and 7009?

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 6991 and 7009 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 6991 and 7009, than apply into the LCM equation.

GCF(6991,7009) = 1
LCM(6991,7009) = ( 6991 × 7009) / 1
LCM(6991,7009) = 48999919 / 1
LCM(6991,7009) = 48999919

Least Common Multiple (LCM) of 6991 and 7009 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 6991 and 7009. First we will calculate the prime factors of 6991 and 7009.

Prime Factorization of 6991

Prime Factorization of 7009

Now multiplying the highest exponent prime factors to calculate the LCM of 6991 and 7009.

LCM(6991,7009) = 6991¹ × 43¹ × 163¹
LCM(6991,7009) = 48999919