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 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 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 Transpose Sentence 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 Hilbert Curve Mandelbrot Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Snake Sphenic Numbers Trinomial Triangle 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 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 Groovy Harbour Hare Haxe Hush Hy iogii Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua 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 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 Groovy Harbour Hare Haxe Hush Hy iogii Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua 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 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 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 Transpose Sentence 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 Hilbert Curve Mandelbrot Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Snake Sphenic Numbers Trinomial Triangle Turtle Tutorial # Golfer Points Bytes Time 825th Alessandro-Balconi 🇮🇹 882 70 26 Dec 2022 827th primo-ppcg 🇹🇭 882 85 14 Jan 2025 827th MeWhenI 🇻🇦 882 85 21 Apr 2025 829th Irratix 🇳🇱 882 96 4 May 2022 829th MeWhenI 🇻🇦 882 96 1 Jun 2022 829th janbehrens 🇩🇪 882 96 21 Apr 2023 829th Shanethegamer 🇺🇸 882 96 15 May 2023 829th Yewzir 🇧🇪 882 96 11 Nov 2023 829th MateuszPietrzak 🇵🇱 882 96 18 Nov 2023 829th kkoenig 882 96 21 Dec 2023 829th BlankSpruce 882 96 20 Aug 2024 829th fuzzylojik-golf 🇺🇸 882 96 5 days ago 838th GrayJoKing 🇦🇺 881 60 24 Oct 2024 839th ovs-code 🇩🇪 881 73 22 Jul 2023 840th steffan-polygolf 881 74 14 Feb 2024 841st ravnskjaer 🇩🇰 881 133 11 Sep 2024 842nd Shanethegamer 🇺🇸 881 152 9 Sep 2023 842nd emgordon154 881 152 2 Oct 2024 842nd DialFrost 🇸🇬 881 152 27 Oct 2024 845th Shanethegamer 🇺🇸 879 142 27 Mar 2025 845th DialFrost 🇸🇬 879 142 28 Mar 2025 845th emgordon154 879 142 10 Apr 2025 848th Grrisly 878 74 25 Mar 2024 849th GrayJoKing 🇦🇺 878 84 19 Jun 2022 849th primo-ppcg 🇹🇭 878 84 29 Jun 2022 851st dokutan 877 62 28 Apr 2025 852nd Shanethegamer 🇺🇸 877 66 4 May 2022 852nd scpchicken 🇵🇼 877 66 5 May 2022 852nd sisyphus-ppcg 🇦🇺 877 66 6 May 2022 852nd Natanaelel 🇸🇪 877 66 15 Jun 2022 852nd Z-snails 877 66 27 Feb 2023 852nd Jeremy-Stafford 877 66 27 Feb 2023 852nd alomiF 877 66 1 Sep 2023 852nd btnlq 877 66 17 Oct 2023 860th Shanethegamer 🇺🇸 877 73 8 May 2025 860th DialFrost 🇸🇬 877 73 15 days ago 862nd c0d3-4-F00d 🇩🇪 877 89 5 May 2022 862nd TRexOnGit 877 89 16 Feb 2024 862nd arcpolaris 877 89 18 Nov 2024 865th c0d3-4-F00d 🇩🇪 876 61 6 May 2022 865th jackkav 876 61 26 Jun 2022 865th TechNolaByte 876 61 6 Jul 2022 865th Heathcorp 🇦🇺 876 61 17 Jul 2022 865th C0de5mith 🇺🇸 876 61 3 Aug 2022 865th sebipopa 🇷🇴 876 61 18 Aug 2022 865th moikaturns 🇬🇧 876 61 25 Sep 2022 865th FlorianCassayre 🇫🇷 876 61 27 Sep 2022 865th Mazn3k 876 61 1 Feb 2023 865th tvcv901 876 61 22 Mar 2023 865th unfinishedprogram 876 61 19 Jul 2023 865th snoozingnewt 🇺🇸 876 61 23 Sep 2023 865th funnyboy-roks 876 61 9 May 2024 865th bac0id 876 61 29 Jun 2024 865th madex 🇩🇪 876 61 9 Jul 2024 865th cdesodt 876 61 10 Oct 2024 865th RobertHoeh 876 61 5 Apr 2025 865th kirjavascript 876 61 4 May 2025 865th LvLError 876 61 20 days ago 865th Lv0Sys 🇵🇱 876 61 19 days ago 865th Protothor 876 61 19 days ago 886th johnnythedoggie 876 72 13 May 2022 887th guilhem-roy 🇫🇷 876 76 5 May 2022 887th NewDefectus 🇮🇱 876 76 6 May 2022 887th CuboidRaptor 🇨🇦 876 76 25 May 2022 887th TheSmilingTurtle 876 76 5 Jun 2022 887th Romain-1 🇫🇷 876 76 8 Jun 2022 887th jhpaques 🇫🇷 876 76 30 Jul 2022 887th chriscianfarani 876 76 10 Aug 2022 887th eshilo-draper 876 76 13 Sep 2022 887th suwat513 876 76 22 Sep 2022 887th Jaydosu 876 76 14 Nov 2022 887th tails618 876 76 2 Dec 2022 887th KevinLyvers 876 76 17 Dec 2022 887th nayakrujul 876 76 3 Jan 2023 887th CheeseCake628 🇳🇴 876 76 8 Jan 2023 Prev 826–900 of 3,094 Next