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 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 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 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 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 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 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 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 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 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 785th Clay-Goodling 888 75 8 Oct 2024 785th JunkIce 888 75 5 Mar 2025 785th jiji7879 888 75 17 days ago 785th faragocsaba 888 75 15 days ago 785th bknower 888 75 8 days ago 831st c0d3-4-F00d 🇩🇪 888 132 6 May 2022 831st madeforlosers 888 132 26 Oct 2023 831st Blockyheadman 888 132 1 Nov 2023 831st SpiritAxolotl 🇺🇸 888 132 20 Mar 2024 835th canissimia 🇦🇶 888 204 25 Nov 2023 836th MeWhenI 🇻🇦 887 53 1 Jun 2022 836th stefangimmillaro 887 53 2 Oct 2022 836th Haksell 🇦🇶 887 53 22 Feb 2023 839th ovs-code 🇩🇪 887 151 9 Sep 2023 839th Yewzir 🇧🇪 887 151 21 May 2024 841st GolfingSuccess 🇬🇷 885 71 5 May 2022 841st emplv 🇱🇻 885 71 5 May 2022 841st JayXon 🇺🇸 885 71 7 May 2022 841st nwellnhof 🇩🇪 885 71 5 Jun 2022 841st stefangimmillaro 885 71 2 Jun 2023 841st 09cf 885 71 4 Oct 2023 841st kkoenig 885 71 21 Dec 2023 841st sean-niemann 🇺🇸 885 71 10 Jul 2024 841st masinag 🇮🇹 885 71 6 Oct 2024 841st KasperKivimaeki 🇫🇮 885 71 27 Mar 2025 851st m-tkach 🇺🇦 885 117 7 May 2022 851st Lydxn 🇨🇦 885 117 7 May 2022 853rd Shanethegamer 🇺🇸 884 70 12 Dec 2022 853rd Alessandro-Balconi 🇮🇹 884 70 26 Dec 2022 855th SiestaGuru 884 88 9 Jan 2023 855th rifatx 884 88 5 Jul 2024 857th janbehrens 🇩🇪 884 90 21 Apr 2023 857th Yewzir 🇧🇪 884 90 22 Apr 2023 857th DialFrost 🇸🇬 884 90 6 Nov 2023 857th Ripick 884 90 27 Nov 2024 861st m-tkach 🇺🇦 884 112 15 days ago 862nd jared-hughes 884 130 15 Dec 2024 863rd m-tkach 🇺🇦 883 59 21 Jan 2024 863rd GolfingSuccess 🇬🇷 883 59 20 Jan 2025 865th nipzu 883 94 17 May 2022 865th Natanaelel 🇸🇪 883 94 17 Jun 2022 865th nkoppel 883 94 19 Oct 2022 865th ovs-code 🇩🇪 883 94 21 Jun 2023 865th mousetail 🇳🇱 883 94 12 Jan 2024 870th Shanethegamer 🇺🇸 882 51 15 May 2023 871st steffan-polygolf 882 74 14 Feb 2024 872nd primo-ppcg 🇹🇭 882 85 14 Jan 2025 872nd MeWhenI 🇻🇦 882 85 21 Apr 2025 874th Irratix 🇳🇱 882 96 4 May 2022 874th MeWhenI 🇻🇦 882 96 1 Jun 2022 874th janbehrens 🇩🇪 882 96 21 Apr 2023 874th Shanethegamer 🇺🇸 882 96 15 May 2023 874th Yewzir 🇧🇪 882 96 11 Nov 2023 874th MateuszPietrzak 🇵🇱 882 96 18 Nov 2023 874th kkoenig 882 96 21 Dec 2023 874th BlankSpruce 882 96 20 Aug 2024 874th fuzzylojik-golf 🇺🇸 882 96 24 days ago 883rd GrayJoKing 🇦🇺 881 60 24 Oct 2024 884th ovs-code 🇩🇪 881 73 22 Jul 2023 885th ravnskjaer 🇩🇰 881 133 11 Sep 2024 886th Shanethegamer 🇺🇸 881 152 9 Sep 2023 886th emgordon154 881 152 2 Oct 2024 886th DialFrost 🇸🇬 881 152 27 Oct 2024 889th GrayJoKing 🇦🇺 879 84 19 Jun 2022 889th primo-ppcg 🇹🇭 879 84 29 Jun 2022 891st Shanethegamer 🇺🇸 879 142 27 Mar 2025 891st DialFrost 🇸🇬 879 142 28 Mar 2025 891st emgordon154 879 142 10 Apr 2025 894th dokutan 878 62 28 Apr 2025 895th Shanethegamer 🇺🇸 878 73 8 May 2025 895th DialFrost 🇸🇬 878 73 3 Jun 2025 895th edsrzf 🇳🇿 878 73 3 days ago 898th Grrisly 878 74 25 Mar 2024 899th Shanethegamer 🇺🇸 877 66 4 May 2022 899th scpchicken 🇵🇼 877 66 5 May 2022 Prev 826–900 of 3,174 Next