Mega2560 serial output problem

Hello all,
I have a problem with my Mega2560 not outputing correct info.
Here is my code:

void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);   //To Computer
}

void loop() {
  // put your main code here, to run repeatedly:
  Serial.println('Test');
}

As you can see, this is a very simple program and I expect it to output 'Test' to the comport.
What I get is '29556'.

Is this some kind of error code or something? I have tried this on 2 Mega2560 bords
and get the same result. I suspect 1 board may be damaged, the other is new.
Any help would be greatly appreciated.
Thanks

Double quotes for a string, not single.

This is NOT an installation and troubleshooting issue.

The single quotes make it a character constant. A 16-bit integer can hold two characters and it looks like it keeps the last two:

29556 = 0x7374 = 'st'