While the TARDIS is hiding away, you're going to need to use a few security protocols to protect yourself in case something should happen to me and you need to get away. That, Martha, involves the very simple process of putting in the security code 1-1-1-4 into the TARDIS and then setting the date where you want to go.
Well, it should be easy, except the TARDIS only speaks my homeworld language, Gallifreyan. And since we haven't got a lot of time before the Family shows up and I have to turn into a human, I'm going to have to give you a quick course on Gallifreyan numbers so you can use them to code up the ship should the worst happen and I can't be here to help you.
Right, so here's a visual demonstration of some of the basic numbers with English overtop for clarification:
No doubt you've seen these before, yeah? On the scanner. Right, so!
As you can see, the Gallifreyan number system equivalents to the concept of base seven. Which means every number from 1-6 has it's own character and the numbers afterwards are multiples of that number creating their own individual character.
I know you're not a mathematician, Martha. So, I'll make it simple.
Basically the concept of bases means that there aren't other numbers besides 1-6, seven numerals, existing in the Gallifreyan base time system. Excepting 456226, which doesn't really use real characters anyway, but that's a rather strange number on Gallifrey, so let's stick with what we've got, shall we?
The least important number in the number you're referring to is on the bottom of the hexagon in the Gallifreyan numeral system. Yes? Okay. Now, you take the sums of the numbers and add them to create the extra base and you add them together in the hexagon and voila, you have the numbers. You see? The numbers blend.
A small hexagon is zero. So, you use the small hexagon as a multiplier to create the extra volume needed to create larger numbers. When you're creating a string of numbers, as you'll need to override the TARDIS protocol, you'll just have to blend the numbers within the hexagon to create a longer series.
Here's an example.
See? Not too complicated, is it?
Now, when you're putting in the coordinates for Earth (the TARDIS databank should register it as Sol 3), make sure you enter them correctly as I've written, or else the computer will automatically set them for galactic coordinates ten-zero-eleven-zero-zero by zero-two from galactic zero centre.
Right, so! That's your Gallifreyan numeral lesson for the day. Hope it serves you well, wish I could answer more questions should they arise, but I think you'll do just fine.
Moving on to number…uh, what was it? Oh, right, eighteen.
Muse: The Doctor (Ten)
Fandom: Doctor Who
Word Count: 469