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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 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 Minesweeper 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 Binary Lambda Calculus Calendar Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Tower of Hanoi Turtle Tutorial All Languages ><> 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 ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel 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 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 ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel 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 Minesweeper 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 Binary Lambda Calculus Calendar Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Tower of Hanoi Turtle Tutorial # Golfer Points Bytes Time Submitted 740th TeodorDyakov 🇧🇬 873 72 2ms 8 Jul 2025 740th xiaoyiming123 873 72 2ms 12 Jul 2025 753rd ovs-code 🇩🇪 873 83 63ms 1 Jul 2024 754th DialFrost 🇸🇬 872 64 5ms 10 Jul 2024 755th dieggsy 872 97 41ms 8 Oct 2024 756th ulucs 871 35 9ms 8 May 2022 756th bstrat 871 35 8ms 6 Jun 2024 756th wh3n3v3r 🇨🇿 871 35 9ms 18 Nov 2024 759th scpchicken 🇵🇼 871 45 349ms 4 May 2022 759th SirBogman 🇺🇸 871 45 241ms 5 May 2022 761st Andriamanitra 🇫🇮 871 54 42ms 21 Jul 2022 761st jared-hughes 871 54 39ms 12 Sep 2022 761st OhmNomNom 871 54 47ms 7 Oct 2022 761st olleicua 🇺🇸 871 54 41ms 21 Jan 2024 761st LostSyntax21 🇬🇧 871 54 41ms 12 Mar 2025 761st AbrahamJLR 🇻🇪 871 54 40ms 4 Jun 2025 761st vishal-mohanty 871 54 42ms 25 Aug 2025 768th TFeld00 🇩🇰 871 71 25ms 17 May 2022 768th DialFrost 🇸🇬 871 71 36ms 15 Nov 2022 768th StefanHabel 🇨🇦 871 71 18ms 29 Nov 2022 768th nstearns96 🇬🇧 871 71 19ms 11 Jan 2023 768th hallvabo 🇳🇴 871 71 19ms 7 Feb 2023 768th anter69 🇭🇺 871 71 18ms 21 May 2024 768th rucin93 🇵🇱 871 71 17ms 10 Jul 2024 768th lelbal 871 71 18ms 26 Aug 2025 768th HETHAT 🇩🇿 871 71 24ms 23 Sep 2025 768th 09cf 871 71 17ms 12 days ago 768th blaztoma 🇱🇹 871 71 23ms 5 days ago 779th MeWhenI 🇻🇦 871 85 44ms 27 Jun 2022 779th Shanethegamer 🇺🇸 871 85 42ms 15 May 2023 779th albanian-laundromat 871 85 45ms 25 Aug 2025 782nd Shanethegamer 🇺🇸 870 98 108ms 15 Apr 2025 782nd GolfingSuccess 🇬🇷 870 98 93ms 2 days ago 784th CaedenHarper 🇨🇦 869 60 710ms 28 Sep 2025 785th Steffan153 🇫🇮 869 82 1,270ms 23 Feb 2023 786th ovs-code 🇩🇪 869 133 42ms 8 Jul 2024 787th Frowny 868 38 43ms 5 May 2022 787th stackofbears 868 38 53ms 14 Mar 2025 789th steffan-polygolf 868 73 79ms 23 Feb 2023 789th MWI-polygolf 868 73 73ms 6 Dec 2023 789th HumanoidCPU 868 73 72ms 7 May 2024 792nd mtirado1 868 75 8ms 13 Aug 2022 793rd 123mjb 868 96 346ms 10 days ago 793rd noescareno 868 96 344ms 8 days ago 795th stefangimmillaro 868 112 259ms 26 Sep 2023 795th kkoenig 868 112 256ms 4 Jan 2024 797th pardouin 🇫🇷 867 61 135ms 7 Aug 2024 798th MeWhenI 🇻🇦 867 92 398ms 10 Oct 2022 798th Betuaredead 867 92 468ms 5 Jan 2023 798th emgordon154 867 92 427ms 27 May 2025 798th Yax42 🇫🇷 867 92 420ms 4 Oct 2025 802nd TylerBloom 866 96 127ms 22 Mar 2024 803rd 5quiwyrm 865 52 279ms 4 Sep 2022 803rd MeWhenI 🇻🇦 865 52 261ms 28 Jan 2023 803rd Feniske 🇫🇷 865 52 208ms 7 Nov 2023 803rd dcgjb 865 52 251ms 29 Jan 2024 803rd JPRuskin 🇬🇧 865 52 290ms 7 Apr 2025 803rd IISResetMe 865 52 259ms 7 Apr 2025 803rd Ripick 865 52 261ms 1 Jun 2025 810th Andriamanitra 🇫🇮 865 67 159ms 26 Apr 2023 811th MeWhenI 🇻🇦 865 81 8ms 23 May 2023 812th bac0id 865 90 320ms 26 Sep 2023 812th deadp4nda 🇩🇪 865 90 315ms 26 Apr 2024 812th 123mjb 865 90 321ms 23 Jun 2025 812th michelebastione 🇮🇹 865 90 365ms 24 Aug 2025 812th razvandmtr 🇷🇴 865 90 342ms 24 days ago 817th shellbertt 🇨🇦 865 98 54ms 9 May 2022 817th iakolzin 865 98 52ms 26 May 2022 817th Betuaredead 865 98 53ms 5 Jan 2023 817th oceko 865 98 52ms 19 Feb 2024 817th dokutan 865 98 55ms 17 Mar 2024 817th cuzdav 865 98 53ms 4 May 2025 817th timhaj 🇸🇮 865 98 56ms 12 Sep 2025 817th Yax42 🇫🇷 865 98 51ms 4 Oct 2025 825th DialFrost 🇸🇬 864 86 19ms 15 Dec 2024 First Prev 751–825 of 3,494 Next Last