Niven Numbers in Ruby in bytes. Achievements Cheevos Holes Languages Medals Miscellaneous All Holes 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Happy Numbers Happy Numbers (Long) Hexdump Hilbert Curve Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Minesweeper Morse Decoder Morse Encoder Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Apéry’s Constant Binary Lambda Calculus Calendar Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Multitap Input NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang F# Factor Forth Fortran Gleam Go GolfScript Groovy Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig 05AB1E ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang F# Factor Forth Fortran Gleam Go GolfScript Groovy Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig Experimental Language 05AB1E ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Hole All 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Happy Numbers Happy Numbers (Long) Hexdump Hilbert Curve Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Minesweeper Morse Decoder Morse Encoder Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Apéry’s Constant Binary Lambda Calculus Calendar Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Multitap Input NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 1st sisyphus-ppcg 🇦🇺 1,000 34 41ms 22 Feb 2023 1st radarek 🇵🇱 1,000 34 33ms 3 May 2023 1st Lydxn 🇨🇦 1,000 34 35ms 23 Jun 2023 4th GrayJoKing 🇦🇺 971 35 34ms 8 Sep 2021 4th ovs-code 🇩🇪 971 35 32ms 21 Jun 2022 6th xsot 🇸🇬 944 36 32ms 25 Nov 2019 6th nwellnhof 🇩🇪 944 36 32ms 14 Feb 2020 6th SirBogman 🇺🇸 944 36 34ms 15 Jun 2020 6th primo-ppcg 🇹🇭 944 36 32ms 8 Oct 2020 6th prplz 🇦🇺 944 36 32ms 23 Oct 2020 6th hiddicop 🇸🇪 944 36 34ms 26 Jan 2021 6th JayXon 🇺🇸 944 36 36ms 11 Feb 2021 6th orthoplex 🇨🇽 944 36 34ms 3 Apr 2022 6th jared-hughes 944 36 35ms 9 Sep 2022 6th stefangimmillaro 944 36 32ms 30 Sep 2022 6th MeWhenI 🇻🇦 944 36 31ms 10 Oct 2022 6th OhmNomNom 944 36 32ms 15 Oct 2022 6th Steffan153 🇫🇮 944 36 33ms 17 Nov 2022 6th DialFrost 🇸🇬 944 36 32ms 14 Jan 2023 6th sean-niemann 🇺🇸 944 36 32ms 17 Jan 2023 6th Shanethegamer 🇺🇸 944 36 32ms 8 Mar 2023 6th m-tkach 🇺🇦 944 36 33ms 2 Jun 2023 6th emgordon154 944 36 33ms 7 Aug 2024 6th pardouin 🇫🇷 944 36 32ms 20 Aug 2024 6th lynn 944 36 32ms 20 Sep 2024 6th FlyingPenguin223 944 36 34ms 5 Oct 2024 6th fuzzylojik-golf 🇺🇸 944 36 37ms 5 Jul 2025 6th snoozingnewt 🇨🇦 944 36 49ms 6 days ago 29th UladzimirSukharukau 919 37 32ms 9 May 2018 29th janlelis 919 37 33ms 21 Jan 2021 29th gilufin 919 37 33ms 30 May 2021 29th NewDefectus 🇮🇱 919 37 36ms 8 Oct 2021 29th akshatj27 🇦🇶 919 37 33ms 11 Jan 2022 29th Irratix 🇳🇱 919 37 33ms 4 Mar 2022 29th janbehrens 🇩🇪 919 37 33ms 30 May 2022 29th ls-samer-abuthaher 919 37 35ms 7 Oct 2022 29th Yewzir 🇧🇪 919 37 32ms 12 Oct 2023 29th olleicua 🇺🇸 919 37 32ms 13 Feb 2024 29th dokutan 919 37 33ms 30 Apr 2024 29th qwertyuiop3 🇷🇺 919 37 32ms 6 Jun 2025 29th Natanaelel 🇸🇪 919 37 32ms 4 Jul 2025 42nd adoxography 895 38 33ms 22 Jul 2018 42nd acornellier 895 38 33ms 8 Dec 2018 42nd hrrs01 895 38 32ms 29 Jan 2019 42nd handisb 895 38 32ms 18 Oct 2019 42nd mogron 895 38 33ms 14 Dec 2019 42nd proton 🇩🇪 895 38 33ms 3 Jun 2020 42nd Waffle3z 895 38 33ms 12 Oct 2020 42nd KatieLG 🇬🇧 895 38 33ms 3 Nov 2020 42nd jaredcrystal 🇺🇸 895 38 32ms 15 Dec 2020 42nd anter69 🇭🇺 895 38 31ms 3 Aug 2021 42nd olivermrose 🇺🇸 895 38 33ms 10 Sep 2021 42nd yzhs 🇩🇪 895 38 32ms 20 Jul 2022 42nd 4hg 🇺🇸 895 38 32ms 13 Aug 2022 42nd Andriamanitra 🇫🇮 895 38 34ms 25 Aug 2022 42nd rniii 895 38 32ms 21 Aug 2023 42nd wlaud9 895 38 32ms 10 Feb 2024 42nd error256 895 38 31ms 13 May 2024 42nd aydamak 895 38 32ms 15 May 2024 42nd LostSyntax21 🇬🇧 895 38 31ms 10 Sep 2024 42nd tatzyr 🇯🇵 895 38 33ms 20 Mar 2025 42nd ejini6969 895 38 32ms 14 Jun 2025 42nd csharpython 895 38 33ms 2 Aug 2025 42nd vishal-mohanty 895 38 32ms 25 Aug 2025 42nd blaztoma 🇱🇹 895 38 56ms 12 Oct 2025 42nd AetherQuantity 895 38 31ms 21 Oct 2025 42nd Matter1024 🇮🇳 895 38 72ms 26 days ago 42nd Lv0Sys 🇵🇱 895 38 45ms 9 days ago 69th graft 872 39 32ms 21 Dec 2018 69th ConorOBrien-Foxx 872 39 33ms 2 Mar 2019 69th sk- 872 39 32ms 11 Sep 2019 69th sapphyrus 872 39 34ms 18 Feb 2020 69th meenie 872 39 33ms 15 Feb 2021 69th schachmattmatt 872 39 33ms 18 Aug 2021 69th kinoute 🇫🇷 872 39 32ms 10 Sep 2021 1–75 of 129 Next Last