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 478th dokutan 898 89 425ms 8 Feb 2026 482nd DialFrost 🇸🇬 897 29 154ms 15 Mar 2025 483rd nwellnhof 🇩🇪 896 69 24ms 4 May 2022 483rd m-tkach 🇺🇦 896 69 18ms 4 May 2022 483rd GolfingSuccess 🇬🇷 896 69 19ms 5 May 2022 483rd jared-hughes 896 69 18ms 5 May 2022 483rd ovs-code 🇩🇪 896 69 26ms 5 May 2022 483rd btnlq 896 69 17ms 5 May 2022 483rd sisyphus-ppcg 🇦🇺 896 69 15ms 6 May 2022 483rd lynn 896 69 17ms 22 Aug 2022 483rd Steffan153 🇫🇮 896 69 17ms 15 Nov 2022 483rd AlexanderFair 896 69 24ms 19 Jul 2023 483rd pardouin 🇫🇷 896 69 18ms 11 Nov 2023 483rd AlephSquirrel 896 69 448ms 30 Dec 2023 483rd kg583 🇺🇸 896 69 25ms 28 Jan 2024 483rd davecame 896 69 24ms 20 Aug 2024 483rd zacjl 896 69 18ms 19 Sep 2024 483rd starfihs 896 69 17ms 12 Oct 2024 483rd kops-cg 896 69 24ms 9 Feb 2025 483rd sean-niemann 🇺🇸 896 69 18ms 7 Mar 2025 483rd plcc0 896 69 16ms 26 Mar 2025 483rd yujh-yujh 🇬🇸 896 69 24ms 28 Mar 2025 483rd moustave 896 69 17ms 10 Jun 2025 483rd 4atj 896 69 3,516ms 30 Jun 2025 483rd dirckvdende 896 69 17ms 11 Jul 2025 483rd xnor-gate 896 69 17ms 19 Aug 2025 483rd BrunoVisnadi 🇧🇷 896 69 26ms 1 Oct 2025 483rd Mukundan314 896 69 18ms 13 Nov 2025 483rd bizy-coder 896 69 16ms 21 Nov 2025 483rd duckyluuk 🇳🇱 896 69 19ms 4 Dec 2025 483rd bricknellj 896 69 17ms 4 Dec 2025 483rd Seek64 🇩🇪 896 69 17ms 26 Dec 2025 483rd jusaka 896 69 17ms 2 days ago 483rd CaedenHarper 🇨🇦 896 69 17ms 10 hours ago 515th MichalMarsalek 🇨🇿 896 87 379ms 5 May 2022 515th Kloppermand 🇩🇰 896 87 350ms 7 Oct 2022 515th bwat2 896 87 367ms 6 Apr 2023 515th bpharaldsson 896 87 358ms 9 Feb 2026 519th Shanethegamer 🇺🇸 895 61 4ms 31 Oct 2022 519th MeWhenI 🇻🇦 895 61 4ms 4 Nov 2022 521st oeb25 895 93 124ms 16 May 2022 521st snobee 🇨🇦 895 93 128ms 8 Dec 2022 521st logvp 895 93 126ms 2 Jan 2024 521st smartiel 895 93 126ms 12 Aug 2024 521st trist224 🇫🇷 895 93 127ms 12 Aug 2024 521st nullie 895 93 128ms 19 Dec 2024 521st lolgeny 895 93 138ms 22 Feb 2025 528th Steffan153 🇫🇮 894 52 7ms 31 Dec 2022 528th blaztoma 🇱🇹 894 52 8ms 18 Jan 2026 530th Yewzir 🇧🇪 894 72 134ms 20 Nov 2025 531st frankgraziano 894 75 21ms 23 Feb 2026 532nd GolfingSuccess 🇬🇷 894 95 61ms 5 May 2022 532nd Alex-x90 🇺🇸 894 95 62ms 4 Dec 2022 532nd Mandrzejy 🇵🇱 894 95 61ms 22 Mar 2024 535th snoozingnewt 🇨🇦 894 96 112ms 4 Dec 2025 535th Steffan153 🇫🇮 894 96 111ms 27 Feb 2026 537th stefangimmillaro 893 71 100ms 2 Oct 2022 537th Steffan153 🇫🇮 893 71 100ms 23 Feb 2023 537th Shanethegamer 🇺🇸 893 71 98ms 16 May 2023 537th sean-niemann 🇺🇸 893 71 96ms 12 Jul 2024 541st Lydxn 🇨🇦 893 108 322ms 6 May 2022 541st CaedenHarper 🇨🇦 893 108 346ms 5 Oct 2025 543rd canissimia 🇦🇶 893 110 2,640ms 20 Feb 2023 544th jared-hughes 893 130 22ms 15 Dec 2024 545th primo-ppcg 🇹🇭 892 52 219ms 5 May 2022 545th dvargas46 🇺🇸 892 52 87ms 22 Dec 2022 547th KatieLG 🇬🇧 892 60 15ms 4 May 2022 547th ScottHamper 892 60 10ms 5 May 2022 547th Re-Adventures 🇮🇳 892 60 10ms 5 May 2022 547th 0x24a537r9 892 60 11ms 29 Jul 2022 547th stefangabos 🇷🇴 892 60 10ms 19 Aug 2022 547th eranws 892 60 11ms 10 Sep 2022 547th GeorgeStechman 🇬🇧 892 60 12ms 26 Sep 2022 547th BloodStormKnight 892 60 12ms 15 Oct 2022 547th dzshn 892 60 12ms 3 Dec 2022 547th biocommando 🇫🇮 892 60 10ms 20 Dec 2022 547th Betuaredead 892 60 14ms 5 Jan 2023 547th piano-miles 892 60 12ms 16 Jan 2023 547th Yewzir 🇧🇪 892 60 10ms 12 Feb 2023 547th shellbertt 🇨🇦 892 60 10ms 26 Feb 2023 First Prev 481–560 of 3,765 Next Last
