types:
characteristic
the integer part (positive or negative) of the representation of a logarithm; in the expression log 643 = 2.808 the characteristic is 2
divisor,
factor
one of two or more integers that can be exactly divided into another integer
common multiple
an integer that is a multiple of two or more other integers
modulus
an integer that can be divided without remainder into the difference between two other integers
digit,
figure
one of the elements that collectively form a system of numeration
population
the number of inhabitants (either the total number or the number of a particular race or class) in a given place (country or city etc.)
prime factor
the prime factors of a quantity are all of the prime quantities that will exactly divide the given quantity
equivalent-binary-digit factor
the average number of binary digits needed to express one radix digit in a numeration system that is not binary; on the average a number that can be expressed in N decimal digits takes 3.3N binary digits
significant digit,
significant figure
any digit of a number that is known with certainty; any digit of a number beginning with the leftmost non-zero digit and ending with the rightmost non-zero digit (or a zero considered to be the exact value)
2,
II,
deuce,
two
the cardinal number that is the sum of one and one or a numeral representing this number
3,
III,
deuce-ace,
leash,
tercet,
ternary,
ternion,
terzetto,
three,
threesome,
tierce,
trey,
triad,
trine,
trinity,
trio,
triplet,
troika
the cardinal number that is the sum of one and one and one
4,
IV,
Little Joe,
four,
foursome,
quadruplet,
quartet,
quatern,
quaternary,
quaternion,
quaternity,
tetrad
the cardinal number that is the sum of three and one
5,
Little Phoebe,
Phoebe,
V,
cinque,
fin,
five,
fivesome,
pentad,
quint,
quintet,
quintuplet
the cardinal number that is the sum of four and one
6,
Captain Hicks,
VI,
half a dozen,
hexad,
sestet,
sextet,
sextuplet,
sise,
six,
sixer
the cardinal number that is the sum of five and one
10,
X,
decade,
ten,
tenner
the cardinal number that is the sum of nine and one; the base of the decimal system
11,
XI,
eleven
the cardinal number that is the sum of ten and one
teens
all the numbers that end in -teen
14,
XIV,
fourteen
the cardinal number that is the sum of thirteen and one
15,
XV,
fifteen
the cardinal number that is the sum of fourteen and one
16,
XVI,
sixteen
the cardinal number that is the sum of fifteen and one
18,
XVIII,
eighteen
the cardinal number that is the sum of seventeen and one
19,
XIX,
nineteen
the cardinal number that is the sum of eighteen and one
20,
XX,
twenty
the cardinal number that is the sum of nineteen and one
30,
XXX,
thirty
the cardinal number that is the product of ten and three
40,
XL,
forty
the cardinal number that is the product of ten and four
50,
L,
fifty
the cardinal number that is the product of ten and five
60,
LX,
sixty
the cardinal number that is the product of ten and six
70,
LXX,
seventy
the cardinal number that is the product of ten and seven
90,
XC,
ninety
the cardinal number that is the product of ten and nine
500,
D,
five hundred
the cardinal number that is the product of one hundred and five
crore
the number that is represented as a one followed by 7 zeros; ten million
quadrillion
the number that is represented as a one followed by 15 zeros
quadrillion
the number that is represented as a one followed by 24 zeros
quintillion
the number that is represented as a one followed by 18 zeros
sextillion
the number that is represented as a one followed by 21 zeros
septillion
the number that is represented as a one followed by 24 zeros
octillion
the number that is represented as a one followed by 27 zeros