What is the Least Common Multiple of 6490 and 6506?

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 6490 and 6506 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 6490 and 6506, than apply into the LCM equation.

GCF(6490,6506) = 2
LCM(6490,6506) = ( 6490 × 6506) / 2
LCM(6490,6506) = 42223940 / 2
LCM(6490,6506) = 21111970

Least Common Multiple (LCM) of 6490 and 6506 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 6490 and 6506. First we will calculate the prime factors of 6490 and 6506.

Prime Factorization of 6490

Prime Factorization of 6506

Now multiplying the highest exponent prime factors to calculate the LCM of 6490 and 6506.

LCM(6490,6506) = 2¹ × 5¹ × 11¹ × 59¹ × 3253¹
LCM(6490,6506) = 21111970