LCM( 17, 2 ) = 34
The formula for finding LCM is
$$ \text{LCM} (a, b) = \frac{ a \cdot b }{ \text{GCD}(a,b)} $$In this example we have: a = 17, b = 2 and GCD(17, 2) = 1.
$$ \text{LCM} (17, 2) = \frac{ 17 \cdot 2 }{ \text{GCD}(17,2)} = \frac{ 34 }{ 1 } = 34 $$