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 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 Chars Time Submitted 557th 1231234md5 🇨🇳 888 63 21ms 14 Dec 2023 557th f-tucker 888 63 24ms 6 Feb 2024 557th JunkIce 888 63 25ms 24 Nov 2024 557th Kowalskiexe 🇵🇱 888 63 21ms 19 Apr 2025 557th 123mjb 888 63 24ms 2 Jun 2025 557th DrakeSeteraO 888 63 63ms 24 Oct 2025 557th enigma 888 63 38ms 21 Dec 2025 557th ASampsonMu31 888 63 52ms 13 Mar 2026 557th cuvam 🇺🇸 888 63 52ms 37 mins ago 570th Shanethegamer 🇺🇸 888 72 145ms 8 May 2025 570th edsrzf 🇳🇿 888 72 144ms 4 Jul 2025 570th Yewzir 🇧🇪 888 72 134ms 20 Nov 2025 573rd snoozingnewt 🇨🇦 888 95 112ms 4 Dec 2025 573rd Steffan153 🇫🇮 888 95 111ms 27 Feb 2026 575th lynn 887 65 267ms 5 May 2022 575th GrayJoKing 🇦🇺 887 65 250ms 5 May 2022 575th Sakisan 🇧🇪 887 65 178ms 6 May 2022 575th JayXon 🇺🇸 887 65 271ms 17 Oct 2022 575th Steffan153 🇫🇮 887 65 181ms 12 Nov 2022 575th tobeannouncd 887 65 302ms 25 Apr 2025 575th sean-niemann 🇺🇸 887 65 168ms 9 Jun 2025 582nd DialFrost 🇸🇬 887 95 30ms 10 Dec 2024 583rd m-tkach 🇺🇦 887 112 116ms 22 Jun 2025 584th stefangimmillaro 886 71 95ms 2 Oct 2022 584th Steffan153 🇫🇮 886 71 106ms 23 Feb 2023 584th Shanethegamer 🇺🇸 886 71 101ms 16 May 2023 584th sean-niemann 🇺🇸 886 71 100ms 12 Jul 2024 588th frankgraziano 886 75 17ms 23 Feb 2026 589th GrayJoKing 🇦🇺 886 77 76ms 13 Sep 2024 590th Steffan153 🇫🇮 885 52 7ms 31 Dec 2022 590th blaztoma 🇱🇹 885 52 8ms 18 Jan 2026 592nd albanian-laundromat 🇺🇸 884 94 486ms 24 Sep 2025 592nd jkelly467 884 94 401ms 23 Oct 2025 592nd HumanoidCPU 884 94 479ms 8 Nov 2025 595th primo-ppcg 🇹🇭 883 52 219ms 5 May 2022 595th dvargas46 🇺🇸 883 52 87ms 22 Dec 2022 597th GrayJoKing 🇦🇺 883 70 2ms 6 May 2022 597th ovs-code 🇩🇪 883 70 2ms 8 Oct 2023 597th 09cf 883 70 2ms 8 Oct 2023 597th saito-ta 🇯🇵 883 70 2ms 21 Dec 2023 597th sean-niemann 🇺🇸 883 70 2ms 10 Jul 2024 597th KasperKivimaeki 🇫🇮 883 70 6ms 8 Aug 2025 603rd ovs-code 🇩🇪 883 73 340ms 22 Jul 2023 604th Shanethegamer 🇺🇸 883 83 1,459ms 4 May 2022 605th primo-ppcg 🇹🇭 883 85 39ms 14 Jan 2025 605th MeWhenI 🇻🇦 883 85 41ms 21 Apr 2025 607th SiestaGuru 883 88 419ms 9 Jan 2023 607th rifatx 883 88 438ms 5 Jul 2024 607th kmathis22 883 88 463ms 25 Sep 2025 610th frosster 🇨🇦 882 77 5ms 8 Feb 2026 611th ovs-code 🇩🇪 882 89 458ms 24 Jul 2024 611th jipsong 🇩🇪 882 89 450ms 7 Apr 2025 611th DialFrost 🇸🇬 882 89 485ms 24 Dec 2025 614th nipzu 882 94 128ms 17 May 2022 614th Natanaelel 🇸🇪 882 94 130ms 17 Jun 2022 614th nkoppel 882 94 128ms 19 Oct 2022 614th ovs-code 🇩🇪 882 94 131ms 21 Jun 2023 614th mousetail 🇳🇱 882 94 136ms 12 Jan 2024 619th Irratix 🇳🇱 882 96 60ms 4 May 2022 619th MeWhenI 🇻🇦 882 96 62ms 1 Jun 2022 619th janbehrens 🇩🇪 882 96 58ms 21 Apr 2023 619th Shanethegamer 🇺🇸 882 96 62ms 15 May 2023 619th Yewzir 🇧🇪 882 96 71ms 11 Nov 2023 619th MateuszPietrzak 🇵🇱 882 96 63ms 18 Nov 2023 619th kkoenig 882 96 62ms 21 Dec 2023 619th BlankSpruce 882 96 62ms 20 Aug 2024 619th fuzzylojik-golf 🇺🇸 882 96 66ms 14 Jun 2025 619th dokutan 882 96 91ms 8 Feb 2026 629th canissimia 🇦🇶 881 50 45ms 5 May 2022 629th ovs-code 🇩🇪 881 50 245ms 7 May 2022 629th sisyphus-ppcg 🇦🇺 881 50 88ms 20 Feb 2023 629th sean-niemann 🇺🇸 881 50 43ms 9 Jun 2025 629th pardouin 🇫🇷 881 50 43ms 22 Aug 2025 634th sean-niemann 🇺🇸 881 108 335ms 25 May 2024 634th GolfingSuccess 🇬🇷 881 108 340ms 6 Sep 2025 634th edsrzf 🇳🇿 881 108 330ms 17 days ago 637th primo-ppcg 🇹🇭 881 193 107ms 14 Aug 2025 638th sisyphus-ppcg 🇦🇺 880 40 387ms 31 Jan 2023 638th sean-niemann 🇺🇸 880 40 385ms 8 Mar 2025 640th GrayJoKing 🇦🇺 880 72 433ms 31 May 2022 First Prev 561–640 of 3,744 Next Last