Natural number
Cardinal one
hundred
Ordinal 100th (one hundredth)
Factorization 22 × 52
Divisors 1, 2, 4, 5, 10, 20, 25, 50, 100
Greek numeral Ρ´
Roman numeral C, c
Binary 11001002
Ternary 102013
Senary 2446
Octal 1448
Duodecimal 8412
Hexadecimal 6416
Greek numeral ρ
Arabic ١٠٠
Bengali ১০০
Chinese numeral 佰,百
Devanagari १००
Hebrew ק
Khmer ១០០
Armenian Ճ
Tamil ௱, க௦௦
Thai ๑๐๐
Egyptian hieroglyph 𓍢
Babylonian cuneiform 𒐕𒐏
100 or one hundred (
Roman numeral : C )
[1] is the
natural number following
99 and preceding
101 .
In mathematics
100 as the sum of the first positive cubes.
100 is the square of
10 (in
scientific notation it is written as 102 ). The standard
SI prefix for a hundred is "
hecto -".
100 is the basis of
percentages (per cent meaning "per hundred" in Latin), with 100% being a full amount.
100 is a
Harshad number in
decimal , and also in base-four, a base in-which it is also a
self-descriptive number .
[2]
[3]
100 is the sum of the first nine
prime numbers , from
2 through
23 .
[4] It is also divisible by the number of primes below it,
25 .
[5]
100 cannot be expressed as the difference between any integer and the total of
coprimes below it, making it a
noncototient .
[6]
100 has a
reduced totient of 20, and an
Euler totient of 40.
[7]
[8] A totient value of 100 is obtained from four numbers:
101 ,
125 ,
202 , and
250 .
100 can be expressed as a sum of some of its divisors, making it a
semiperfect number .
[9] The
geometric mean of its nine divisors is
10 .
100 is the sum of the
cubes of the first four positive
integers (100 = 13 + 23 + 33 + 43 ).
[10] This is related by
Nicomachus's theorem to the fact that 100 also equals the square of the sum of the first four positive integers: 100 = 102 = (1 + 2 + 3 + 4)2 .
[11]
100 = 26 + 62 , thus 100 is the seventh
Leyland number .
[12] 100 is also the seventeenth
Erdős–Woods number , and the fourth 18-
gonal number .
[13]
[14]
The 100th prime number is
541 , which returns
0
{\displaystyle 0}
for the
Mertens function .
[15] It is the 10th
star number
[16] (whose
digit sum also adds to 10 in
decimal ).
There are exactly 100 prime numbers in base-ten whose digits are in strictly ascending order (e.g. 239, 2357 etc.).
[17] The last such prime number is 23456789, which contains eight consecutive
integers as digits.
In science
One hundred is the atomic number of
fermium , an
actinide and the last of the
heavy metals that can be created through neutron bombardment.
On the
Celsius scale, 100 degrees is the boiling temperature of pure
water at
sea level .
The
Kármán line lies at an altitude of 100 kilometres above the Earth's sea level and is commonly used to define the boundary between Earth's atmosphere and outer space.
In history
In religion
In politics
In money
Hundred rupee note India
Most of the world's
currencies are divided into 100 subunits; for example, one
euro is one hundred cents and one
pound sterling is one hundred pence.
By specification,
100 euro notes feature a picture of a Rococo gateway on the obverse and a Baroque bridge on the reverse.
The
U.S. hundred-dollar bill , Series 2009
The
U.S. hundred-dollar bill has
Benjamin Franklin 's portrait; the "Benjamin" is the largest U.S. bill in print. American savings bonds of $100 have
Thomas Jefferson 's portrait, while American $100 treasury bonds have
Andrew Jackson 's portrait.
In sports
In other fields
One hundred is also:
See also
References
^ Reinforced by but not originally derived from
Latin centum .
^
"Sloane's A005349 : Niven (or Harshad) numbers" . The On-Line Encyclopedia of Integer Sequences . OEIS Foundation. Retrieved 2016-05-27 .
^
Sloane, N. J. A. (ed.).
"Sequence A108551 (Self-descriptive numbers in various bases represented in base 10)" . The
On-Line Encyclopedia of Integer Sequences . OEIS Foundation. Retrieved 2022-12-08 .
^
Sloane, N. J. A. (ed.).
"Sequence A007504 (Sum of the first n primes.)" . The
On-Line Encyclopedia of Integer Sequences . OEIS Foundation.
^
Sloane, N. J. A. (ed.).
"Sequence A057809 (Numbers n such that pi(n) divides n.)" . The
On-Line Encyclopedia of Integer Sequences . OEIS Foundation.
^
Sloane, N. J. A. (ed.).
"Sequence A005278 (Noncototients)" . The
On-Line Encyclopedia of Integer Sequences . OEIS Foundation. Retrieved 2022-12-08 .
^
Sloane, N. J. A. (ed.).
"Sequence A002322 (Reduced totient function)" . The
On-Line Encyclopedia of Integer Sequences . OEIS Foundation. Retrieved 2022-12-08 .
^
Sloane, N. J. A. (ed.).
"Sequence A000010 (Euler totient function)" . The
On-Line Encyclopedia of Integer Sequences . OEIS Foundation.
^
Sloane, N. J. A. (ed.).
"Sequence A005835 (Pseudoperfect (or semiperfect) numbers n)" . The
On-Line Encyclopedia of Integer Sequences . OEIS Foundation. Retrieved 2022-12-08 .
^
Sloane, N. J. A. (ed.).
"Sequence A025403 (Numbers that are the sum of 4 positive cubes in exactly 1 way.)" . The
On-Line Encyclopedia of Integer Sequences . OEIS Foundation. Retrieved 2022-12-08 .
^
Sloane, N. J. A. (ed.).
"Sequence A000537 (Sum of first n cubes; or n-th triangular number squared)" . The
On-Line Encyclopedia of Integer Sequences . OEIS Foundation.
^
"Sloane's A076980 : Leyland numbers" . The On-Line Encyclopedia of Integer Sequences . OEIS Foundation. Retrieved 2016-05-27 .
^
Sloane, N. J. A. (ed.).
"Sequence A059756 (Erdős-Woods numbers: the length of an interval of consecutive integers with property that every element has a factor in common with one of the endpoints)" . The
On-Line Encyclopedia of Integer Sequences . OEIS Foundation. Retrieved 2022-11-30 .
^
"Sloane's A051870 : 18-gonal numbers" . The On-Line Encyclopedia of Integer Sequences . OEIS Foundation. Retrieved 2016-05-27 .
^
Sloane, N. J. A. (ed.).
"Sequence A028442 (Numbers k such that Mertens's function M(k) (A002321) is zero.)" . The
On-Line Encyclopedia of Integer Sequences . OEIS Foundation. Retrieved 2023-09-02 .
^
Sloane, N. J. A. (ed.).
"Sequence A003154" . The
On-Line Encyclopedia of Integer Sequences . OEIS Foundation. Retrieved 2023-09-02 .
^
Sloane, N. J. A. (ed.).
"Sequence A052015 (Primes with distinct digits in ascending order.)" . The
On-Line Encyclopedia of Integer Sequences . OEIS Foundation. Retrieved 2022-11-05 .
^ see
Duodecimal § Origin
^ Insights , September 28, 2011.
^
Leo Rosten ,
The Joys of Yiddish (1968), page 52.
^ Grasso, John (2013),
Historical Dictionary of Football , Scarecrow Press, p. 133,
ISBN
9780810878570 .
^
"Basketball Legend Chamberlain Dies at 63" . www.washingtonpost.com . Retrieved 2023-08-07 .
External links
Look up
hundred in Wiktionary, the free dictionary.
100,000
1,000,000
10,000,000
100,000,000
1,000,000,000