In science
- The atomic number of mercury
| ||||
|---|---|---|---|---|
| Cardinal | eighty | |||
| Ordinal | 80th (eightieth) | |||
| Factorization | 24 × 5 | |||
| Divisors | 1, 2, 4, 5, 8, 10, 16, 20, 40, 80 | |||
| Greek numeral | Π´ | |||
| Roman numeral | LXXX, lxxx | |||
| Binary | 10100002 | |||
| Ternary | 22223 | |||
| Senary | 2126 | |||
| Octal | 1208 | |||
| Duodecimal | 6812 | |||
| Hexadecimal | 5016 | |||
| Armenian | Ձ | |||
| Hebrew | פ / ף | |||
| Babylonian numeral | 𒐕⟪ | |||
| Egyptian hieroglyph | 𓎍 | |||
80 (eighty) is the natural number following 79 and preceding 81.
80 is:
The Pareto principle (also known as the 80-20 rule) states that, for many events, roughly 80% of the effects come from 20% of the causes. [3] [4]
Every solvable configuration of the 15 puzzle can be solved in no more than 80 single-tile moves. [5]
78 (seventy-eight) is the natural number following 77 and preceding 79.
70 (seventy) is the natural number following 69 and preceding 71.
90 (ninety) is the natural number following 89 and preceding 91.
81 (eighty-one) is the natural number following 80 and preceding 82.
84 (eighty-four) is the natural number following 83 and preceding 85. It is seven dozens.
36 (thirty-six) is the natural number following 35 and preceding 37.
37 (thirty-seven) is the natural number following 36 and preceding 38.
39 (thirty-nine) is the natural number following 38 and preceding 40.
43 (forty-three) is the natural number following 42 and preceding 44.
54 is the natural number and positive integer following 53 and preceding 55. As a multiple of 2 but not of 4, 54 is an oddly even number and a composite number. The prime factorization of 54 contains four numbers, so it is 4-almost prime.
56 (fifty-six) is the natural number following 55 and preceding 57.
58 (fifty-eight) is the natural number following 57 and preceding 59.
96 (ninety-six) is the natural number following 95 and preceding 97. It is a number that appears the same when turned upside down.
100 or one hundred is the natural number following 99 and preceding 101.100
300 is the natural number following 299 and preceding 301.
360 is the natural number following 359 and preceding 361.
500 is the natural number following 499 and preceding 501.
700 is the natural number following 699 and preceding 701.
240 is the natural number following 239 and preceding 241.
20,000 is the natural number that comes after 19,999 and before 20,001.
