# Line function doesn't work [closed]

I want to draw a vertical line like this:

a = 10^(1/0.0015);
Line[{{a, -5}, {a, -3}}]


But there is an error:

• Do you really want the $x$ value to be $\approx 10^{666}$? – David G. Stork Oct 1 '15 at 17:01
• @DavidG.Stork I put my real problem down in the comment. – yangyang Oct 1 '15 at 19:44

MachineNumberQ[10^(1/0.0015)]

False