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 901st GrayJoKing 🇦🇺 880 84 19 Jun 2022 901st primo-ppcg 🇹🇭 880 84 29 Jun 2022 903rd Grrisly 879 74 25 Mar 2024 904th Shanethegamer 🇺🇸 879 142 27 Mar 2025 904th DialFrost 🇸🇬 879 142 28 Mar 2025 904th emgordon154 879 142 10 Apr 2025 907th primo-ppcg 🇹🇭 879 193 14 Aug 2025 908th dokutan 878 62 28 Apr 2025 909th DialFrost 🇸🇬 878 86 24 Oct 2024 909th stefangimmillaro 878 86 14 Jan 2025 911th c0d3-4-F00d 🇩🇪 877 61 6 May 2022 911th jackkav 877 61 26 Jun 2022 911th TechNolaByte 877 61 6 Jul 2022 911th Heathcorp 🇦🇺 877 61 17 Jul 2022 911th C0de5mith 🇺🇸 877 61 3 Aug 2022 911th sebipopa 🇷🇴 877 61 18 Aug 2022 911th moikaturns 🇬🇧 877 61 25 Sep 2022 911th FlorianCassayre 🇫🇷 877 61 27 Sep 2022 911th Mazn3k 877 61 1 Feb 2023 911th tvcv901 877 61 22 Mar 2023 911th unfinishedprogram 877 61 19 Jul 2023 911th snoozingnewt 🇺🇸 877 61 23 Sep 2023 911th funnyboy-roks 877 61 9 May 2024 911th bac0id 877 61 29 Jun 2024 911th madex 🇩🇪 877 61 9 Jul 2024 911th FortuiteMan 🇫🇷 877 61 10 Oct 2024 911th RobertHoeh 877 61 5 Apr 2025 911th LvLError 877 61 29 May 2025 911th Lv0Sys 🇵🇱 877 61 30 May 2025 911th miles-evan 877 61 5 Aug 2025 931st Shanethegamer 🇺🇸 877 66 4 May 2022 931st scpchicken 🇵🇼 877 66 5 May 2022 931st sisyphus-ppcg 🇦🇺 877 66 6 May 2022 931st Natanaelel 🇸🇪 877 66 15 Jun 2022 931st Z-snails 877 66 27 Feb 2023 931st Jeremy-Stafford 877 66 27 Feb 2023 931st alomiF 877 66 1 Sep 2023 931st btnlq 877 66 17 Oct 2023 939th guilhem-roy 🇫🇷 877 76 5 May 2022 939th NewDefectus 🇮🇱 877 76 6 May 2022 939th CuboidRaptor 🇨🇦 877 76 25 May 2022 939th TheSmilingTurtle 877 76 5 Jun 2022 939th Romain-1 🇫🇷 877 76 8 Jun 2022 939th jhpaques 🇫🇷 877 76 30 Jul 2022 939th chriscianfarani 877 76 10 Aug 2022 939th eshilo-draper 877 76 13 Sep 2022 939th suwat513 877 76 22 Sep 2022 939th Jaydosu 877 76 14 Nov 2022 939th tails618 877 76 2 Dec 2022 939th KevinLyvers 877 76 17 Dec 2022 939th nayakrujul 877 76 3 Jan 2023 939th CheeseCake628 🇳🇴 877 76 8 Jan 2023 939th CatsAreFluffy 877 76 18 Feb 2023 939th adamnielson42 🇺🇸 877 76 1 Mar 2023 939th Schreipfelerer 877 76 9 Apr 2023 939th hm5822 877 76 22 Apr 2023 939th celiendonze 🇨🇭 877 76 5 Jul 2023 939th brochmann 🇸🇪 877 76 13 Aug 2023 939th Command-Master 877 76 2 Oct 2023 939th chartung17 877 76 17 Dec 2023 939th smokestacklightnin 🇺🇸 877 76 10 Jan 2024 939th NickTheEASDude 🇺🇸 877 76 26 Jan 2024 939th yuchuehw 877 76 2 Feb 2024 939th Azearia 877 76 26 Feb 2024 939th tpasfieldERAU 877 76 18 May 2024 939th khavik 877 76 29 May 2024 939th Ythaenagor 877 76 5 Aug 2024 939th martion2007 877 76 9 Aug 2024 939th sjrct 877 76 10 Aug 2024 939th Mathrew2012 877 76 9 Nov 2024 939th kawrei 877 76 4 May 2025 939th RaBa21 🇭🇺 877 76 19 Jul 2025 973rd Grrisly 876 114 25 Mar 2024 974th nwellnhof 🇩🇪 875 53 4 May 2022 974th GrayJoKing 🇦🇺 875 53 6 May 2022 First Prev 901–975 of 3,366 Next Last
