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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 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 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 295th MeWhenI 🇻🇦 923 71 137ms 8 Aug 2023 295th sean-niemann 🇺🇸 923 71 148ms 9 Jan 2025 303rd GrayJoKing 🇦🇺 923 74 4ms 23 Dec 2025 303rd FlyingPenguin223 923 74 6ms 29 Dec 2025 303rd jipsong 🇩🇪 923 74 6ms 2 days ago 306th 4QT0R 923 92 61ms 23 Nov 2023 306th ovs-code 🇩🇪 923 92 63ms 3 Jun 2024 308th Steffan153 🇫🇮 922 76 12ms 15 May 2023 308th primo-ppcg 🇹🇭 922 76 20ms 15 May 2023 308th Lydxn 🇨🇦 922 76 8ms 22 May 2023 308th GrayJoKing 🇦🇺 922 76 12ms 24 Aug 2023 308th kg583 🇺🇸 922 76 12ms 22 Feb 2026 313th pardouin 🇫🇷 921 72 2,662ms 21 May 2025 314th xnor-gate 920 63 187ms 20 Jan 2025 315th Lydxn 🇨🇦 919 70 143ms 7 May 2022 315th JayXon 🇺🇸 919 70 143ms 7 May 2022 317th Steffan153 🇫🇮 919 79 24ms 19 Mar 2026 318th primo-ppcg 🇹🇭 918 61 7ms 6 May 2022 318th sisyphus-ppcg 🇦🇺 918 61 10ms 14 Jul 2022 320th annaproxy 918 79 112ms 24 Aug 2022 320th GrayJoKing 🇦🇺 918 79 86ms 28 Aug 2022 320th JayXon 🇺🇸 918 79 560ms 5 Apr 2023 320th Lydxn 🇨🇦 918 79 556ms 9 Apr 2023 320th IanUtley 918 79 115ms 3 Nov 2023 320th Kacarott 🇦🇺 918 79 121ms 13 Jun 2024 326th JayXon 🇺🇸 918 105 360ms 4 Oct 2025 327th Mukundan314 917 65 661ms 13 days ago 328th Steffan153 🇫🇮 917 71 110ms 14 Oct 2022 328th Shanethegamer 🇺🇸 917 71 109ms 15 Oct 2022 328th stefangimmillaro 917 71 110ms 16 Oct 2022 328th MeWhenI 🇻🇦 917 71 113ms 16 Oct 2022 332nd arctouch-cristiannevianna 917 85 418ms 3 Apr 2023 332nd tomtheisen 🇺🇸 917 85 407ms 10 Apr 2025 334th Shanethegamer 🇺🇸 917 87 461ms 15 May 2023 334th JayXon 🇺🇸 917 87 481ms 15 May 2023 334th Steffan153 🇫🇮 917 87 460ms 16 May 2023 334th Lydxn 🇨🇦 917 87 456ms 16 May 2023 334th GrayJoKing 🇦🇺 917 87 461ms 11 Aug 2023 334th sean-niemann 🇺🇸 917 87 468ms 11 Jul 2024 340th kmathis22 917 91 471ms 20 Nov 2025 341st Natanaelel 🇸🇪 916 57 453ms 17 Jan 2024 341st Kacarott 🇦🇺 916 57 461ms 10 Sep 2024 343rd Shanethegamer 🇺🇸 916 61 4ms 9 Oct 2023 344th Lydxn 🇨🇦 916 81 39ms 1 Apr 2023 345th ovs-code 🇩🇪 915 75 67ms 12 Sep 2024 345th Kacarott 🇦🇺 915 75 62ms 13 Sep 2024 347th GolfingSuccess 🇬🇷 914 64 90ms 14 Dec 2024 347th MeWhenI 🇻🇦 914 64 93ms 24 Dec 2024 347th GrayJoKing 🇦🇺 914 64 88ms 25 Nov 2025 347th Steffan153 🇫🇮 914 64 84ms 34 hours ago 351st GrayJoKing 🇦🇺 914 71 321ms 10 Aug 2023 352nd andersk 🇺🇸 914 91 133ms 25 Oct 2022 352nd Super-Pizza 🇨🇦 914 91 120ms 4 Dec 2022 352nd klixel 🇨🇦 914 91 124ms 20 May 2023 352nd lynn 914 91 128ms 6 Jul 2024 352nd edsrzf 🇳🇿 914 91 124ms 29 Nov 2024 352nd DialFrost 🇸🇬 914 91 130ms 7 Apr 2025 352nd elgan65536 🇺🇸 914 91 131ms 10 Feb 2026 352nd fantaize 914 91 133ms 10 Mar 2026 352nd snoozingnewt 🇨🇦 914 91 137ms 23 days ago 361st edsrzf 🇳🇿 913 52 901ms 9 Mar 2026 362nd tailorspy 913 93 55ms 27 May 2024 362nd sean-niemann 🇺🇸 913 93 62ms 9 Jun 2025 362nd KasperKivimaeki 🇫🇮 913 93 63ms 26 Oct 2025 365th nai62 912 69 7ms 27 Aug 2022 366th MeWhenI 🇻🇦 911 63 209ms 5 May 2022 367th sean-niemann 🇺🇸 911 75 5ms 23 Dec 2025 367th Steffan153 🇫🇮 911 75 5ms 11 Feb 2026 369th Lydxn 🇨🇦 910 68 15ms 5 May 2022 369th GrayJoKing 🇦🇺 910 68 18ms 15 Nov 2022 369th Bubbler-4 910 68 15ms 15 Nov 2022 369th Rubiksmath 910 68 17ms 14 Aug 2023 369th Languag3 910 68 16ms 1 Mar 2026 374th edsrzf 🇳🇿 910 72 131ms 3 Jul 2025 375th Shanethegamer 🇺🇸 910 77 14ms 15 May 2023 376th Steffan153 🇫🇮 910 81 1,429ms 9 days ago 377th ovs-code 🇩🇪 910 84 65ms 25 Sep 2022 377th GrayJoKing 🇦🇺 910 84 65ms 11 Aug 2023 377th edsrzf 🇳🇿 910 84 65ms 12 Nov 2025 377th Steffan153 🇫🇮 910 84 68ms 26 Feb 2026 381st primo-ppcg 🇹🇭 910 93 32ms 7 May 2022 381st AlephSquirrel 910 93 29ms 21 Jan 2023 381st kg583 🇺🇸 910 93 32ms 26 Dec 2024 381st CLOStrophobic 🇮🇹 910 93 43ms 17 Jan 2025 381st edsrzf 🇳🇿 910 93 36ms 3 Jul 2025 386th Betuaredead 909 60 4ms 5 Jan 2023 386th Yewzir 🇧🇪 909 60 4ms 12 Feb 2023 386th Steffan153 🇫🇮 909 60 4ms 23 Feb 2023 386th GolfingSuccess 🇬🇷 909 60 4ms 16 Oct 2024 386th sean-niemann 🇺🇸 909 60 9ms 7 Mar 2025 391st marshallward 🇺🇸 909 83 40ms 10 May 2022 392nd m-tkach 🇺🇦 909 90 31ms 7 Dec 2023 393rd kg583 🇺🇸 908 80 19ms 11 Mar 2026 394th edsrzf 🇳🇿 908 83 41ms 14 Jan 2025 394th kg583 🇺🇸 908 83 42ms 14 Feb 2025 396th nipzu 907 48 56ms 8 Sep 2024 397th KrausRaus 🇺🇸 907 59 11ms 4 May 2022 397th voytxt 🇨🇿 907 59 10ms 4 May 2022 397th KingSkyrock 🇺🇸 907 59 14ms 18 May 2022 397th ZakkkkAttackkkk 🇵🇭 907 59 11ms 14 Jul 2022 First Prev 301–400 of 3,690 Next Last