What is the Least Common Multiple of 7070 and 7090?

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 7070 and 7090 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 7070 and 7090, than apply into the LCM equation.

GCF(7070,7090) = 10
LCM(7070,7090) = ( 7070 × 7090) / 10
LCM(7070,7090) = 50126300 / 10
LCM(7070,7090) = 5012630

Least Common Multiple (LCM) of 7070 and 7090 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 7070 and 7090. First we will calculate the prime factors of 7070 and 7090.

Prime Factorization of 7070

Prime Factorization of 7090

Now multiplying the highest exponent prime factors to calculate the LCM of 7070 and 7090.

LCM(7070,7090) = 2¹ × 5¹ × 7¹ × 101¹ × 709¹
LCM(7070,7090) = 5012630