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 879th smokestacklightnin 🇺🇸 876 76 10 Jan 2024 879th NickTheEASDude 🇺🇸 876 76 26 Jan 2024 879th yuchuehw 876 76 2 Feb 2024 879th Azearia 876 76 26 Feb 2024 879th tpasfieldERAU 876 76 18 May 2024 879th khavik 876 76 29 May 2024 879th Ythaenagor 876 76 5 Aug 2024 879th martion2007 876 76 9 Aug 2024 879th sjrct 876 76 10 Aug 2024 879th Mathrew2012 876 76 9 Nov 2024 879th kawrei 876 76 4 May 2025 912th Shanethegamer 🇺🇸 876 142 27 Mar 2025 912th DialFrost 🇸🇬 876 142 28 Mar 2025 912th emgordon154 876 142 10 Apr 2025 915th althryenix 875 134 25 Jul 2022 915th MrGagnonHPS 875 134 1 Nov 2023 915th noescareno 875 134 5 days ago 918th nwellnhof 🇩🇪 874 53 4 May 2022 918th GrayJoKing 🇦🇺 874 53 6 May 2022 920th AlephSquirrel 873 80 20 Apr 2023 920th ashtraypettingzoo 🇺🇸 873 80 1 Apr 2024 922nd inventshah 873 97 6 May 2022 922nd roupiq 🇵🇱 873 97 22 Nov 2023 922nd fuzzylojik-golf 🇺🇸 873 97 7 days ago 925th Grrisly 873 114 25 Mar 2024 926th MeWhenI 🇻🇦 873 207 21 Apr 2025 927th Irratix 🇳🇱 872 72 4 May 2022 927th m-tkach 🇺🇦 872 72 4 May 2022 927th jared-hughes 872 72 6 Jul 2022 927th michael-pruglo 🇺🇦 872 72 13 Jul 2022 927th Steffan153 🇫🇮 872 72 3 Jan 2023 927th MeWhenI 🇻🇦 872 72 7 May 2023 927th ListeriaM 872 72 22 Aug 2023 927th JohandeRuiter 🇳🇱 872 72 14 Sep 2024 927th larcherMTT 872 72 5 Oct 2024 927th snyderek 🇺🇸 872 72 19 Feb 2025 937th DialFrost 🇸🇬 872 86 24 Oct 2024 937th stefangimmillaro 872 86 14 Jan 2025 939th ovs-code 🇩🇪 871 83 1 Jul 2024 940th dieggsy 871 97 8 Oct 2024 940th edsrzf 🇳🇿 871 97 8 Dec 2024 942nd ulucs 870 35 8 May 2022 942nd bstrat 870 35 6 Jun 2024 942nd wh3n3v3r 🇨🇿 870 35 18 Nov 2024 945th Andriamanitra 🇫🇮 870 54 21 Jul 2022 945th jared-hughes 870 54 12 Sep 2022 945th OhmNomNom 870 54 7 Oct 2022 945th olleicua 🇺🇸 870 54 21 Jan 2024 945th LostSyntax21 🇬🇧 870 54 12 Mar 2025 945th AbrahamJLR 870 54 31 hours ago 951st DialFrost 🇸🇬 870 64 10 Jul 2024 952nd MeWhenI 🇻🇦 870 71 13 Dec 2022 953rd Steffan153 🇫🇮 870 83 9 Apr 2023 954th scpchicken 🇵🇼 869 45 4 May 2022 954th SirBogman 🇺🇸 869 45 5 May 2022 956th ovs-code 🇩🇪 869 85 11 Dec 2023 957th jacobly0 🇺🇸 869 154 26 Sep 2023 957th MeWhenI 🇻🇦 869 154 10 Oct 2023 959th Steffan153 🇫🇮 868 82 23 Feb 2023 960th MeWhenI 🇻🇦 868 85 27 Jun 2022 960th Shanethegamer 🇺🇸 868 85 15 May 2023 962nd lukehewittvandy 868 135 18 Jul 2022 962nd OriEy 868 135 27 Apr 2023 962nd Maximizer02 868 135 8 Jun 2024 962nd 0dyse 868 135 23 Apr 2025 966th deadp4nda 🇩🇪 867 90 26 Apr 2024 967th pardouin 🇫🇷 866 61 7 Aug 2024 968th mtirado1 866 75 13 Aug 2022 969th KatieLG 🇬🇧 866 115 25 Sep 2022 969th emgordon154 866 115 17 Jan 2025 971st Frowny 865 38 5 May 2022 971st stackofbears 865 38 14 Mar 2025 973rd 5quiwyrm 865 52 4 Sep 2022 973rd MeWhenI 🇻🇦 865 52 28 Jan 2023 973rd Feniske 🇫🇷 865 52 7 Nov 2023 Prev 901–975 of 3,078 Next