Dave's Math Tables: Number Notation
(Math | General | NumberNotation)

Hierarchy of Numbers

0(zero) 1(one) 2(two)   3(three) 4(four)
5(five) 6(six) 7(seven) 8(eight) 9(nine)
10^1(ten)  10^2(hundred)  10^3(thousand)

name             American-French  English-German
million          10^6             10^6
billion          10^9             10^12
trillion         10^12            10^18
quadrillion      10^15            10^24
quintillion      10^18            10^30
sextillion       10^21            10^36
septillion       10^24            10^42
octillion        10^27            10^48
nonillion        10^30            10^54
decillion        10^33            10^60
undecillion      10^36            10^66
duodecillion     10^39            10^72
tredecillion     10^42            10^78
quatuordecillion 10^45            10^84
quindecillion    10^48            10^90 
sexdecillion     10^51            10^96
septendecillion  10^54            10^102
octodecillion    10^57            10^108
novemdecillion   10^60            10^114
vigintillion     10^63            10^120
----------------------------------------
googol           10^100
googolplex       10^googol = 10^(10^100)
----------------------------------------

SI Prefixes

NumberPrefixSymbol
10 1deka-da
10 2hecto-h
10 3kilo-k
10 6mega-M
10 9giga-G
10 12tera-T
10 15peta-P
10 18exa-E
10 21zeta-Z
10 24yotta-Y
NumberPrefixSymbol
10 -1deci-d
10 -2centi-c
10 -3milli-m
10 -6micro-u (greek mu)
10 -9nano-n
10 -12pico-p
10 -15femto-f
10 -18atto-a
10 -21zepto-z
10 -24yocto-y

Roman Numerals

I=1V=5X=10L=50C=100D=500M=1 000
 _
V=5 000		_
X=10 000		_
L=50 000		_
C = 100 000		_
D=500 000		_
M=1 000 000
Examples: 
1 = I
2 = II
3 = III
4 = IV
5 = V
6 = VI
7 = VII
8 = VIII
9 = IX
10 = X
 
11 = XI
12 = XII
13 = XIII
14 = XIV
15 = XV
16 = XVI
17 = XVII
18 = XVIII
19 = XIX
20 = XX
21 = XXI
 
25 = XXV
30 = XXX
40 = XL
49 = XLIX
50 = L
51 = LI
60 = LX
70 = LXX
80 = LXXX
90 = XC
99 = XCIX

Number Base Systems

decimal binary ternary oct hex
      0      0       0   0   0
      1      1       1   1   1
      2     10       2   2   2
      3     11      10   3   3
      4    100      11   4   4
      5    101      12   5   5
      6    110      20   6   6
      7    111      21   7   7
      8   1000      22  10   8
      9   1001     100  11   9
     10   1010     101  12   A
     11   1011     102  13   B
     12   1100     110  14   C
     13   1101     111  15   D
     14   1110     112  16   E
     15   1111     120  17   F
     16  10000     121  20  10
     17  10001     122  21  11
     18  10010     200  22  12
     19  10011     201  23  13
     20  10100     202  24  14
Java Base Conversion Calculator (This converts non-integer values & negative bases too!)
(For Microsoft 2+/Netscape 2+/Javascript web browsers only)
from baseto basevalue to convert
Caution: due to CPU restrictions, some rounding has been known to occur for numbers spanning greater than 12 base10 digits, 13 hexadecimal digits or 52 binary digits. Just like a regular calculator, rounding can occur.


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