&gt; 5xN is easier to remember than 16xN on account of 5 being the smaller number.<p>By that logic, shouldn&#x27;t it be easier to remember 7 * n than 10 * n, because 7 is the smaller number?<p>&gt; 2^n is logarithmic<p>Also, as Jtsummers (<a href="https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=10973381" rel="nofollow">https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=10973381</a>) points out, the function `n \mapsto 2^n` is <i>exponential</i>:  its growth is significantly <i>faster</i>, not significantly <i>slower</i>, than exponential.