Number games you play in your head while bored?

legoman666

Diamond Member
Dec 18, 2003
3,628
1
0
I do powers of two when I'm bored. IE:
2
4
8
16
32
64
128
256
512
1024
2048
4096
8192
16384
32768
65536
131072
262144
524288
And that's where I lose track of the digits in my head.

Anyone else do stuff like this? Like Fibbonaci? I tried that a few ties, but it gets too big too quickly and I can't remember the previous 2 numbers.
 

Goosemaster

Lifer
Apr 10, 2001
48,775
3
81
I try to improve my counting/calculation speed. I am still very tied to my physical audible capabilities
when it comes to consecutive counting, so I practice patter,s by 2s, squares, cubes etc
 

Foxery

Golden Member
Jan 24, 2008
1,709
0
0
My 5th grade math teacher showed us how to quickly determine whether any number of any size was divisible (factorable) by 3,5,7,11, etc... I used to see factors every time I looked at a digital clock. :( Thank god that stopped.
 

TruePaige

Diamond Member
Oct 22, 2006
9,874
2
0
I assign numeric values to auditory sounds and try to create multiples that hit certain numbers.