How to Memorize Numbers

Giordano Bruno’s insanely elaborate memory system.

Yesterday we introduced an ancient memory system that can be handy for learning all those new urban homesteading skills. Today I’ll briefly discuss a way to use a related mnemonic called the Major System for committing strings of numbers to memory.

To use the Major System you first memorize a set of consonants that represent 0 through 9. From Wikipedia, here’s a table of the Major System consonants and a set of mnemonics with which to remember them:

Numeral Associated Consonants Mnemonic
0 s, z, soft c “z” is the first letter of zero. The other letters have a similar sound.
1 d, t d & t have one downstroke and sound similar (some variant systems include “th”)
2 n n has two downstrokes
3 m M has three downstrokes and looks like a “3” on its side
4 r last letter of four, also 4 and R are almost mirror images of each other
5 l L is the Roman Numeral for 50
6 j, sh, soft “ch”, dg, zh, soft “g” a script j has a lower loop / g is almost a 6 flipped over
7 k, hard c, hard g, hard “ch”, q, qu capital K “contains” two sevens
8 f, v script f resembles a figure-8. V sounds similar. (some variant systems include th)
9 b, p p is a mirror-image 9. b sounds similar and resembles a 9 rolled around
Unassigned Vowel sounds, w,h,y These can be used anywhere without changing a word’s number value

So, for example, to memorize the number “1795” you start with the first two numbers “17”. Let’s say 1 = “d” and 7=”g”. Next add a vowel of your choice, say “o” to make “dog“. “17” now is a dog.  For the 95 let’s say 9 = “b” and 5 = “l” to make “ball”. You now have a dog playing with a ball that you can put into a room in your memory palace. For a longer strings of numbers it’s best to “chunk” them into groups of four to make them more manageable.

This is beyond the amount of time I’m willing to put into this, but you can also commit to memory 100 images to represent double digit numbers between 00 and 99 to be able to memorize longer numbers faster.

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  1. Love this system, been using it for years. I have a few passcodes that need to be numbers for which I just think of an easily associated word and change it into numbers. Makes life a lot easier.

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