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 Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator 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 Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator 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 481st m-tkach 🇺🇦 897 117 25ms 7 May 2022 481st Lydxn 🇨🇦 897 117 26ms 7 May 2022 483rd nwellnhof 🇩🇪 896 69 24ms 4 May 2022 483rd m-tkach 🇺🇦 896 69 18ms 4 May 2022 483rd GolfingSuccess 🇬🇷 896 69 17ms 5 May 2022 483rd jared-hughes 896 69 17ms 5 May 2022 483rd ovs-code 🇩🇪 896 69 23ms 5 May 2022 483rd btnlq 896 69 17ms 5 May 2022 483rd sisyphus-ppcg 🇦🇺 896 69 15ms 6 May 2022 483rd lynn 896 69 18ms 22 Aug 2022 483rd Steffan153 🇫🇮 896 69 18ms 15 Nov 2022 483rd AlexanderFair 896 69 24ms 19 Jul 2023 483rd pardouin 🇫🇷 896 69 18ms 11 Nov 2023 483rd AlephSquirrel 896 69 476ms 30 Dec 2023 483rd kg583 🇺🇸 896 69 25ms 28 Jan 2024 483rd davecame 896 69 23ms 20 Aug 2024 483rd zacjl 896 69 17ms 19 Sep 2024 483rd starfihs 896 69 18ms 12 Oct 2024 483rd kops-cg 896 69 23ms 9 Feb 2025 483rd sean-niemann 🇺🇸 896 69 19ms 7 Mar 2025 483rd plcc0 896 69 16ms 26 Mar 2025 483rd yujh-yujh 🇬🇸 896 69 17ms 28 Mar 2025 483rd moustave 896 69 16ms 10 Jun 2025 483rd 4atj 896 69 3,504ms 30 Jun 2025 483rd dirckvdende 896 69 17ms 11 Jul 2025 483rd xnor-gate 896 69 17ms 19 Aug 2025 483rd BrunoVisnadi 🇧🇷 896 69 24ms 1 Oct 2025 483rd Mukundan314 896 69 18ms 13 Nov 2025 483rd bizy-coder 896 69 18ms 21 Nov 2025 483rd duckyluuk 🇳🇱 896 69 18ms 4 Dec 2025 483rd bricknellj 896 69 17ms 4 Dec 2025 483rd Seek64 🇩🇪 896 69 17ms 26 Dec 2025 513th JayXon 🇺🇸 896 74 2,528ms 14 Nov 2024 514th MichalMarsalek 🇨🇿 896 87 379ms 5 May 2022 514th Kloppermand 🇩🇰 896 87 350ms 7 Oct 2022 514th bwat2 896 87 367ms 6 Apr 2023 514th bpharaldsson 896 87 425ms 9 Feb 2026 518th oeb25 895 93 127ms 16 May 2022 518th snobee 🇨🇦 895 93 128ms 8 Dec 2022 518th logvp 895 93 130ms 2 Jan 2024 518th smartiel 895 93 127ms 12 Aug 2024 518th trist224 🇫🇷 895 93 127ms 12 Aug 2024 518th nullie 895 93 128ms 19 Dec 2024 518th lolgeny 895 93 138ms 22 Feb 2025 525th Shanethegamer 🇺🇸 894 61 4ms 31 Oct 2022 525th MeWhenI 🇻🇦 894 61 4ms 4 Nov 2022 527th GolfingSuccess 🇬🇷 894 95 60ms 5 May 2022 527th Alex-x90 🇺🇸 894 95 65ms 4 Dec 2022 527th Mandrzejy 🇵🇱 894 95 60ms 22 Mar 2024 530th Steffan153 🇫🇮 893 52 7ms 31 Dec 2022 530th blaztoma 🇱🇹 893 52 10ms 18 Jan 2026 532nd Yewzir 🇧🇪 893 72 148ms 20 Nov 2025 533rd KatieLG 🇬🇧 892 60 11ms 4 May 2022 533rd ScottHamper 892 60 12ms 5 May 2022 533rd Re-Adventures 🇮🇳 892 60 11ms 5 May 2022 533rd 0x24a537r9 892 60 13ms 29 Jul 2022 533rd stefangabos 🇷🇴 892 60 11ms 19 Aug 2022 533rd eranws 892 60 11ms 10 Sep 2022 533rd GeorgeStechman 🇬🇧 892 60 11ms 26 Sep 2022 533rd BloodStormKnight 892 60 11ms 15 Oct 2022 533rd dzshn 892 60 11ms 3 Dec 2022 533rd biocommando 🇫🇮 892 60 10ms 20 Dec 2022 533rd Betuaredead 892 60 12ms 5 Jan 2023 533rd piano-miles 892 60 14ms 16 Jan 2023 533rd Yewzir 🇧🇪 892 60 11ms 12 Feb 2023 533rd shellbertt 🇨🇦 892 60 12ms 26 Feb 2023 533rd zakariamouhid 892 60 10ms 20 May 2023 533rd raphaelimahorn 892 60 11ms 23 Aug 2023 533rd jbt 892 60 11ms 25 Dec 2023 533rd olleicua 🇺🇸 892 60 9ms 15 Feb 2024 533rd HumanoidCPU 892 60 12ms 3 May 2024 533rd dokutan 892 60 11ms 13 Aug 2024 533rd LostSyntax21 🇬🇧 892 60 10ms 10 Sep 2024 533rd xyangst 892 60 11ms 28 Sep 2024 533rd a6166231 🇨🇳 892 60 10ms 15 May 2025 533rd SebassNoob 892 60 10ms 5 Aug 2025 533rd levinwinter 892 60 10ms 22 Oct 2025 533rd Cube14yt 892 60 10ms 16 Nov 2025 533rd gigaprofisi 🇺🇸 892 60 11ms 17 Nov 2025 533rd amazingalek 🇳🇴 892 60 10ms 20 Dec 2025 First Prev 481–560 of 3,665 Next Last