From Wikipedia, the free encyclopedia
Natural number
511 is the natural number following 510 and preceding 512.
It is a Mersenne number, being one less than a power of 2: 511 = 2 9 − 1 {\displaystyle 511=2^{9}-1} .[1] As a result, 511 is a palindromic number and a repdigit in bases 2 (1111111112). It is also palindromic and a repdigit in base 8 (7778).
It is a generalized heptagonal number (sequence A085787 in the OEIS), since 511 = 1 2 ( 5 n 2 − 3 n ) {\displaystyle 511={\frac {1}{2}}(5n^{2}-3n)} when n = − 14 {\displaystyle n=-14} .
It is a Harshad number in bases 3, 5, 7, 10, 13 and 15.
Special use in computers[edit]The octal representation of 511 (7778) is commonly used by Unix commands to specify a custom record separator in order to "slurp" input as a whole, rather than line-by-line (i.e. separated at newline characters).[2]
Integers −1 0s 100s 200s 300s 400s 500s 600s 700s 800s 900s 1000sRetroSearch is an open source project built by @garambo | Open a GitHub Issue
Search and Browse the WWW like it's 1997 | Search results from DuckDuckGo
HTML:
3.2
| Encoding:
UTF-8
| Version:
0.7.4