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Collatz in all languages in bytes. Achievements Cheevos Holes Languages Medals Miscellaneous 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 Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions 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 Gray Code Decoder Gray Code Encoder 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 Minesweeper Morse Decoder Morse Encoder Multitap Input 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 Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Dragon Curve Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers Huffman Encoder NFA Simulator Nim Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> ALGOL 68 ArkScript Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang 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 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> ALGOL 68 ArkScript Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang 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 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily 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 Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions 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 Gray Code Decoder Gray Code Encoder 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 Minesweeper Morse Decoder Morse Encoder Multitap Input 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 Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Dragon Curve Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers Huffman Encoder NFA Simulator Nim Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 797th Steffan153 🇫🇮 874 72 2ms 3 Jan 2023 797th MeWhenI 🇻🇦 874 72 2ms 7 May 2023 797th ListeriaM 874 72 2ms 22 Aug 2023 797th JohandeRuiter 🇳🇱 874 72 3ms 14 Sep 2024 797th larcherMTT 874 72 2ms 5 Oct 2024 797th snyderek 🇺🇸 874 72 2ms 19 Feb 2025 797th 5quiwyrm 874 72 2ms 29 Jun 2025 797th TeodorDyakov 🇧🇬 874 72 3ms 8 Jul 2025 797th xiaoyiming123 874 72 2ms 12 Jul 2025 810th Steffan153 🇫🇮 874 83 465ms 9 Apr 2023 810th ovs-code 🇩🇪 874 83 57ms 1 Jul 2024 812th Shanethegamer 🇺🇸 874 98 110ms 15 Apr 2025 812th GolfingSuccess 🇬🇷 874 98 102ms 28 Nov 2025 812th DialFrost 🇸🇬 874 98 109ms 1 Dec 2025 815th DialFrost 🇸🇬 873 64 5ms 10 Jul 2024 816th Shanethegamer 🇺🇸 873 85 38ms 15 May 2023 816th albanian-laundromat 🇺🇸 873 85 40ms 25 Aug 2025 818th ovs-code 🇩🇪 873 133 42ms 8 Jul 2024 819th Andriamanitra 🇫🇮 872 54 46ms 21 Jul 2022 819th jared-hughes 872 54 40ms 12 Sep 2022 819th OhmNomNom 872 54 41ms 7 Oct 2022 819th olleicua 🇺🇸 872 54 41ms 21 Jan 2024 819th LostSyntax21 🇬🇧 872 54 40ms 12 Mar 2025 819th AbrahamJLR 🇻🇪 872 54 40ms 4 Jun 2025 819th vishal-mohanty 872 54 43ms 25 Aug 2025 819th madex 🇩🇪 872 54 47ms 23 days ago 827th dieggsy 872 97 31ms 8 Oct 2024 828th ulucs 871 35 9ms 8 May 2022 828th bstrat 871 35 9ms 6 Jun 2024 828th wh3n3v3r 🇨🇿 871 35 8ms 18 Nov 2024 831st scpchicken 🇵🇼 871 45 363ms 4 May 2022 831st SirBogman 🇺🇸 871 45 268ms 5 May 2022 833rd TFeld00 🇩🇰 871 71 25ms 17 May 2022 833rd DialFrost 🇸🇬 871 71 26ms 15 Nov 2022 833rd StefanHabel 🇨🇦 871 71 20ms 29 Nov 2022 833rd nstearns96 🇬🇧 871 71 25ms 11 Jan 2023 833rd hallvabo 🇳🇴 871 71 20ms 7 Feb 2023 833rd anter69 🇭🇺 871 71 18ms 21 May 2024 833rd rucin93 🇵🇱 871 71 19ms 10 Jul 2024 833rd lelbal 871 71 20ms 26 Aug 2025 833rd HETHAT 🇩🇿 871 71 23ms 23 Sep 2025 833rd 09cf 871 71 17ms 18 Nov 2025 833rd CommandLeo 🇮🇹 871 71 26ms 8 Jan 2026 833rd Flekay 🇩🇪 871 71 20ms 12 Feb 2026 833rd snoozingnewt 🇨🇦 871 71 20ms 13 Feb 2026 833rd JOrE20 871 71 16ms 25 Feb 2026 833rd scpchicken 🇵🇼 871 71 17ms 15 days ago 848th JayXon 🇺🇸 871 158 1,723ms 14 Sep 2025 849th Frowny 869 38 40ms 5 May 2022 849th stackofbears 869 38 42ms 14 Mar 2025 851st 123mjb 869 96 515ms 20 Nov 2025 851st noescareno 869 96 450ms 21 Nov 2025 853rd steffan-polygolf 868 73 97ms 23 Feb 2023 853rd MWI-polygolf 868 73 93ms 6 Dec 2023 853rd HumanoidCPU 868 73 91ms 7 May 2024 856th nwellnhof 🇩🇪 868 111 308ms 4 May 2022 856th emplv 🇱🇻 868 111 348ms 5 May 2022 856th Shanethegamer 🇺🇸 868 111 309ms 21 Nov 2023 859th pardouin 🇫🇷 867 61 136ms 7 Aug 2024 860th MeWhenI 🇻🇦 867 92 467ms 10 Oct 2022 860th Betuaredead 867 92 480ms 5 Jan 2023 860th Yax42 🇫🇷 867 92 459ms 4 Oct 2025 863rd TylerBloom 867 96 118ms 22 Mar 2024 864th shellbertt 🇨🇦 867 98 59ms 9 May 2022 864th iakolzin 867 98 64ms 26 May 2022 864th Betuaredead 867 98 62ms 5 Jan 2023 864th oceko 867 98 58ms 19 Feb 2024 864th cuzdav 867 98 61ms 4 May 2025 864th timhaj 🇸🇮 867 98 64ms 12 Sep 2025 864th Yax42 🇫🇷 867 98 63ms 4 Oct 2025 864th liamjermy6 867 98 64ms 26 days ago 872nd 5quiwyrm 866 52 264ms 4 Sep 2022 872nd MeWhenI 🇻🇦 866 52 333ms 28 Jan 2023 872nd Feniske 🇫🇷 866 52 254ms 7 Nov 2023 872nd dcgjb 866 52 356ms 29 Jan 2024 872nd JPRuskin 🇬🇧 866 52 263ms 7 Apr 2025 872nd IISResetMe 866 52 232ms 7 Apr 2025 872nd Ripick 866 52 237ms 1 Jun 2025 872nd madex 🇩🇪 866 52 271ms 16 Mar 2026 880th bac0id 866 90 495ms 26 Sep 2023 880th deadp4nda 🇩🇪 866 90 412ms 26 Apr 2024 880th 123mjb 866 90 422ms 23 Jun 2025 880th razvandmtr 🇷🇴 866 90 527ms 6 Nov 2025 884th Andriamanitra 🇫🇮 865 67 144ms 26 Apr 2023 885th typeswitch-dev 🇵🇹 865 75 4ms 22 Jul 2023 886th dokutan 865 79 10ms 27 Apr 2024 886th SwordF-Official 🇺🇸 865 79 10ms 1 Feb 2026 888th MeWhenI 🇻🇦 865 81 8ms 23 May 2023 889th Yewzir 🇧🇪 865 159 1,596ms 10 days ago 890th DialFrost 🇸🇬 864 84 17ms 1 Jan 2026 891st HPWiz 🇳🇿 863 50 239ms 4 May 2022 891st JayXon 🇺🇸 863 50 246ms 5 May 2022 891st Steffan153 🇫🇮 863 50 261ms 10 Dec 2022 891st ovs-code 🇩🇪 863 50 426ms 24 Oct 2023 891st sean-niemann 🇺🇸 863 50 280ms 12 Jul 2024 896th Setvizan 863 62 11ms 12 Jan 2023 896th GreenBeansAgainstVeganism 863 62 13ms 13 Jan 2023 896th arctouch-cristiannevianna 863 62 12ms 3 Apr 2023 896th Corxldyphik 863 62 11ms 11 Apr 2023 896th Blockyheadman 863 62 15ms 1 Nov 2023 First Prev 801–900 of 3,692 Next Last