PAUSE works with up to a 16-bit period. If you use an expression that attempts to load anything greater than 65535 into the registers used for the delay period, they will overflow.

65535 + 54465 = 120,000. You're probably getting a delay of 1mS * 54465 due to the overflow. That would explain the ~54 S delay period.

Put together a loop like the one you're using for the LED. You could get several hours (or more) if needed.