80,000
Natural number
From Wikipedia, the free encyclopedia
80,000 (eighty thousand) is the natural number after 79,999 and before 80,001.
| ||||
|---|---|---|---|---|
| Cardinal | eighty thousand | |||
| Ordinal | 80000th (eighty thousandth) | |||
| Factorization | 27 × 54 | |||
| Greek numeral | ||||
| Roman numeral | LXXX, lxxx | |||
| Binary | 100111000100000002 | |||
| Ternary | 110012012223 | |||
| Senary | 14142126 | |||
| Octal | 2342008 | |||
| Duodecimal | 3A36812 | |||
| Hexadecimal | 1388016 | |||
Selected numbers in the range 80,000–89,999
- 80,000 = Since January 2024, the daily URL save limit for YouTube for the Wayback Machine
- 80,782 = Pell number P14[1]
- 81,081 = smallest abundant number ending in 1, 3, 7, or 9
- 81,181 = number of reduced trees with 25 nodes[2]
- 82,000 = the only currently known number greater than 1 that can be written in bases from 2 through 5 using only 0s and 1s.[3][4]
- 82,025 = number of primes .[5]
- 82,467 = number of square (0,1)-matrices without zero rows and with exactly 6 entries equal to 1[6]
- 82,656 = Kaprekar number: 826562 = 6832014336; 68320 + 14336 = 82656[7]
- 82,944 = 3-smooth number: 210 × 34
- 83,097 = Riordan number
- 83,160 = the 29th highly composite number[8]
- 83,357 = Friedman prime[9]
- 84,672 = number of primitive polynomials of degree 21 over GF(2)[10]
- 85,085 = product of five consecutive primes: 5 × 7 × 11 × 13 × 17
- 87,360 = unitary perfect number[11]
- 88,789 = the start of a prime 9-tuple, along with 88793, 88799, 88801, 88807, 88811, 88813, 88817, and 88819.
- 89,134 = number of partitions of 45[12]
Primes
There are 876 prime numbers between 80000 and 90000.
See also
- 80,000 Hours, a British social impact career advisory organization