Collatz in all languages in bytes. Cheevos Holes Recent Holes Langs Medals Misc 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 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 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 Calendar Connect Four CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Turtle Tutorial All Languages ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir 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 Erlang 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 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 Erlang 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 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 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 Calendar Connect Four CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Turtle Tutorial # Golfer Points Bytes Time 900th kaascevich 880 72 8 Jul 2025 902nd GrayJoKing 🇦🇺 880 84 19 Jun 2022 902nd primo-ppcg 🇹🇭 880 84 29 Jun 2022 904th Grrisly 879 74 25 Mar 2024 905th Shanethegamer 🇺🇸 879 142 27 Mar 2025 905th DialFrost 🇸🇬 879 142 28 Mar 2025 905th emgordon154 879 142 10 Apr 2025 908th primo-ppcg 🇹🇭 879 193 14 Aug 2025 909th dokutan 878 62 28 Apr 2025 910th DialFrost 🇸🇬 878 86 24 Oct 2024 910th stefangimmillaro 878 86 14 Jan 2025 912th c0d3-4-F00d 🇩🇪 877 61 6 May 2022 912th jackkav 877 61 26 Jun 2022 912th TechNolaByte 877 61 6 Jul 2022 912th Heathcorp 🇦🇺 877 61 17 Jul 2022 912th C0de5mith 🇺🇸 877 61 3 Aug 2022 912th sebipopa 🇷🇴 877 61 18 Aug 2022 912th moikaturns 🇬🇧 877 61 25 Sep 2022 912th FlorianCassayre 🇫🇷 877 61 27 Sep 2022 912th Mazn3k 877 61 1 Feb 2023 912th tvcv901 877 61 22 Mar 2023 912th unfinishedprogram 877 61 19 Jul 2023 912th snoozingnewt 🇺🇸 877 61 23 Sep 2023 912th funnyboy-roks 877 61 9 May 2024 912th bac0id 877 61 29 Jun 2024 912th madex 🇩🇪 877 61 9 Jul 2024 912th FortuiteMan 🇫🇷 877 61 10 Oct 2024 912th RobertHoeh 877 61 5 Apr 2025 912th LvLError 877 61 29 May 2025 912th Lv0Sys 🇵🇱 877 61 30 May 2025 912th miles-evan 877 61 5 Aug 2025 932nd Shanethegamer 🇺🇸 877 66 4 May 2022 932nd scpchicken 🇵🇼 877 66 5 May 2022 932nd sisyphus-ppcg 🇦🇺 877 66 6 May 2022 932nd Natanaelel 🇸🇪 877 66 15 Jun 2022 932nd Z-snails 877 66 27 Feb 2023 932nd Jeremy-Stafford 877 66 27 Feb 2023 932nd alomiF 877 66 1 Sep 2023 932nd btnlq 877 66 17 Oct 2023 940th guilhem-roy 🇫🇷 877 76 5 May 2022 940th NewDefectus 🇮🇱 877 76 6 May 2022 940th CuboidRaptor 🇨🇦 877 76 25 May 2022 940th TheSmilingTurtle 877 76 5 Jun 2022 940th Romain-1 🇫🇷 877 76 8 Jun 2022 940th jhpaques 🇫🇷 877 76 30 Jul 2022 940th chriscianfarani 877 76 10 Aug 2022 940th eshilo-draper 877 76 13 Sep 2022 940th suwat513 877 76 22 Sep 2022 940th Jaydosu 877 76 14 Nov 2022 940th tails618 877 76 2 Dec 2022 940th KevinLyvers 877 76 17 Dec 2022 940th nayakrujul 877 76 3 Jan 2023 940th CheeseCake628 🇳🇴 877 76 8 Jan 2023 940th CatsAreFluffy 877 76 18 Feb 2023 940th adamnielson42 🇺🇸 877 76 1 Mar 2023 940th Schreipfelerer 877 76 9 Apr 2023 940th hm5822 877 76 22 Apr 2023 940th celiendonze 🇨🇭 877 76 5 Jul 2023 940th brochmann 🇸🇪 877 76 13 Aug 2023 940th Command-Master 877 76 2 Oct 2023 940th chartung17 877 76 17 Dec 2023 940th smokestacklightnin 🇺🇸 877 76 10 Jan 2024 940th NickTheEASDude 🇺🇸 877 76 26 Jan 2024 940th yuchuehw 877 76 2 Feb 2024 940th Azearia 877 76 26 Feb 2024 940th tpasfieldERAU 877 76 18 May 2024 940th khavik 877 76 29 May 2024 940th Ythaenagor 877 76 5 Aug 2024 940th martion2007 877 76 9 Aug 2024 940th sjrct 877 76 10 Aug 2024 940th Mathrew2012 877 76 9 Nov 2024 940th kawrei 877 76 4 May 2025 940th RaBa21 🇭🇺 877 76 19 Jul 2025 974th nwellnhof 🇩🇪 875 53 4 May 2022 974th GrayJoKing 🇦🇺 875 53 6 May 2022 First Prev 901–975 of 3,366 Next Last
