Collatz in all languages in chars. 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 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 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 Multitap Input NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers 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 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 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 Multitap Input NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Chars Time Submitted 76th GrayJoKing 🇦🇺 947 37 77ms 5 May 2022 76th MeWhenI 🇻🇦 947 37 47ms 4 Mar 2025 78th GrayJoKing 🇦🇺 947 59 15ms 15 Nov 2022 79th Lydxn 🇨🇦 946 82 385ms 6 May 2022 79th JayXon 🇺🇸 946 82 360ms 9 May 2022 81st Lydxn 🇨🇦 944 51 786ms 17 Jan 2024 82nd ovs-code 🇩🇪 944 61 248ms 5 Aug 2024 83rd JayXon 🇺🇸 944 88 540ms 24 Sep 2025 83rd Lydxn 🇨🇦 944 88 340ms 9 hours ago 85th Lydxn 🇨🇦 943 59 10ms 6 May 2022 86th JayXon 🇺🇸 941 88 127ms 17 Oct 2022 86th acotis 941 88 119ms 9 Jun 2025 86th kumavale 941 88 136ms 7 Oct 2025 89th 2bular 939 32 27ms 17 Oct 2024 90th primo-ppcg 🇹🇭 938 49 6ms 5 May 2022 90th Lydxn 🇨🇦 938 49 6ms 8 May 2022 92nd JayXon 🇺🇸 938 69 3ms 17 Oct 2022 92nd Lydxn 🇨🇦 938 69 3ms 4 Feb 2023 94th saito-ta 🇯🇵 935 49 64ms 13 May 2022 94th Lydxn 🇨🇦 935 49 64ms 28 May 2022 96th canissimia 🇦🇶 935 50 37ms 5 May 2022 96th ovs-code 🇩🇪 935 50 269ms 7 May 2022 96th sisyphus-ppcg 🇦🇺 935 50 38ms 20 Feb 2023 96th Steffan153 🇫🇮 935 50 39ms 20 Jul 2024 96th sean-niemann 🇺🇸 935 50 37ms 9 Jun 2025 96th pardouin 🇫🇷 935 50 38ms 22 Aug 2025 102nd inventshah 935 57 10ms 4 May 2022 102nd itsh01 935 57 10ms 17 May 2022 102nd Natanaelel 🇸🇪 935 57 10ms 16 Jun 2022 102nd Attero 🇸🇪 935 57 10ms 3 Aug 2022 102nd SirFireball3521 935 57 10ms 26 Jan 2023 102nd Kacarott 🇦🇺 935 57 10ms 24 Mar 2023 102nd nathanadams 🇳🇿 935 57 12ms 24 Apr 2023 102nd hacker112 🇸🇪 935 57 10ms 20 Jun 2024 102nd thisishowmymindworks 🇳🇴 935 57 11ms 28 Jun 2024 102nd Salutations45 935 57 10ms 18 Nov 2024 102nd daniel-cardone 935 57 10ms 3 Jul 2025 102nd CaedenHarper 🇨🇦 935 57 11ms 28 Sep 2025 102nd BrunoVisnadi 🇧🇷 935 57 10ms 21 Oct 2025 102nd Laellekoenig 935 57 10ms 22 Oct 2025 102nd JOrE20 🇺🇸 935 57 10ms 5 Nov 2025 102nd Lv0Sys 🇵🇱 935 57 14ms 5 days ago 118th Irratix 🇳🇱 935 83 351ms 4 May 2022 118th nwellnhof 🇩🇪 935 83 347ms 4 May 2022 118th ScottHamper 935 83 338ms 5 May 2022 118th Romain-1 🇫🇷 935 83 331ms 1 Jun 2022 118th Gaddy 🇫🇷 935 83 365ms 1 Jun 2022 118th 5quiwyrm 935 83 372ms 4 Sep 2022 118th Betuaredead 935 83 357ms 5 Jan 2023 118th Yewzir 🇧🇪 935 83 340ms 12 Feb 2023 118th btnlq 935 83 340ms 9 Mar 2023 118th Adix-null 🇱🇹 935 83 372ms 17 May 2023 118th Matgc04 935 83 347ms 19 May 2023 118th AdrienHache 🇫🇷 935 83 379ms 8 Jun 2023 118th gblikas 935 83 448ms 23 Jul 2023 118th KrausRaus 🇺🇸 935 83 353ms 31 Jul 2023 118th namelessiw 935 83 374ms 9 Apr 2025 118th dokutan 935 83 362ms 9 Apr 2025 118th m-tkach 🇺🇦 935 83 383ms 10 Apr 2025 118th DialFrost 🇸🇬 935 83 386ms 10 Apr 2025 118th Pecanolith 935 83 383ms 19 Apr 2025 118th Tyrant7 935 83 393ms 19 Apr 2025 118th Yax42 🇫🇷 935 83 381ms 19 Apr 2025 118th MeWhenI 🇻🇦 935 83 344ms 19 Jun 2025 118th sean-niemann 🇺🇸 935 83 346ms 20 Jun 2025 118th stefangimmillaro 935 83 389ms 20 Jun 2025 118th tomh1012 935 83 451ms 28 Aug 2025 118th fuzzylojik-golf 🇺🇸 935 83 363ms 8 Sep 2025 118th CaedenHarper 🇨🇦 935 83 357ms 17 Oct 2025 118th Flix7dev 🇧🇪 935 83 384ms 21 Oct 2025 146th DialFrost 🇸🇬 934 89 402ms 24 Sep 2025 146th ovs-code 🇩🇪 934 89 448ms 24 Sep 2025 146th dokutan 934 89 417ms 24 Sep 2025 146th sean-niemann 🇺🇸 934 89 456ms 24 Sep 2025 146th Shanethegamer 🇺🇸 934 89 438ms 25 Sep 2025 First Prev 76–150 of 3,494 Next Last