You might notice that you only remember certain numbers you use everyday, or extremely often. Sometimes it’s someone important, or your like some people I know who have everything on their phone and don’t remember anything (which leaves you in a tight spot if your phone is stolen).
To help you remember any number, thesparine has put together a guide at instructables that demonstrates how to remember absolutely any number.
The system is simple.
There are only TEN basic consonant sounds in the english language, when grouped by the position of the mouth when saying them.
1 = duh, tuh (d, t) = open, with tongue against the back of the front teeth
2 = nuh (n) = open, with tongue against the roof of the mouth
3 = muh (m) = lips closed
4 = ruh (r) = open, with tongue not touching anything
5 = luh (l) = open, with only the tip of the tongue against the roof
6 = chuh, shuh, juh (ch, sh, j) = lips pursed, with tongue obstructing airflow at the top
7 = guh, kuh (g, k) = open, with back of the tongue covering top of the throat
8 = fuh, vuh (f, v) = front top teeth against lower lip
9 = buh, puh (b, p) = lips closed, with puff of air
10 = suh, zuh (s, z) = open, tip of tongue grazing the roof of the mouth
Read the full guide [instructables : How to TURBO-CHARGE your memory, so you can easily remember ANY NUMBER]
via Lifehack
I do recommend Instructables! It’s the best place to go if you want to learn how to create and make unique and awesome things.

June 4, 2007 at 21:02
hey,
I hope you have better luck remembering phone numbers than I do. If you want to do further things to enhance or change your natural state you might want to check out 10 ways to improve your natural night vision or How to lose weight. And if you have a stronger stomach than I, you can perform your own tongue bifurcation.
Cheers!
Randy
(on behalf of the Instructables team)