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 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 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 Apéry’s Constant Binary Lambda Calculus 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 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 ArkScript 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 ><> 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 ArkScript 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 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 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 Apéry’s Constant Binary Lambda Calculus 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 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 558th JayXon 🇺🇸 886 65 311ms 17 Oct 2022 558th Steffan153 🇫🇮 886 65 185ms 12 Nov 2022 558th tobeannouncd 886 65 312ms 25 Apr 2025 558th sean-niemann 🇺🇸 886 65 168ms 9 Jun 2025 565th stefangimmillaro 886 71 89ms 2 Oct 2022 565th Steffan153 🇫🇮 886 71 96ms 23 Feb 2023 565th Shanethegamer 🇺🇸 886 71 90ms 16 May 2023 565th sean-niemann 🇺🇸 886 71 89ms 12 Jul 2024 569th Shanethegamer 🇺🇸 886 72 116ms 8 May 2025 569th edsrzf 🇳🇿 886 72 110ms 4 Jul 2025 569th Yewzir 🇧🇪 886 72 110ms 20 Nov 2025 572nd DialFrost 🇸🇬 886 95 29ms 10 Dec 2024 573rd canissimia 🇦🇶 886 110 2,640ms 20 Feb 2023 574th GrayJoKing 🇦🇺 885 77 76ms 13 Sep 2024 575th Steffan153 🇫🇮 884 52 7ms 31 Dec 2022 575th blaztoma 🇱🇹 884 52 7ms 22 days ago 577th albanian-laundromat 884 94 486ms 24 Sep 2025 577th jkelly467 884 94 401ms 23 Oct 2025 577th HumanoidCPU 884 94 479ms 8 Nov 2025 580th DialFrost 🇸🇬 883 76 82ms 17 Mar 2025 581st stefangimmillaro 882 53 37ms 2 Oct 2022 581st Haksell 🇦🇶 882 53 45ms 22 Feb 2023 583rd GrayJoKing 🇦🇺 882 70 3ms 6 May 2022 583rd ovs-code 🇩🇪 882 70 2ms 8 Oct 2023 583rd 09cf 882 70 2ms 8 Oct 2023 583rd saito-ta 🇯🇵 882 70 2ms 21 Dec 2023 583rd sean-niemann 🇺🇸 882 70 2ms 10 Jul 2024 583rd KasperKivimaeki 🇫🇮 882 70 6ms 8 Aug 2025 589th primo-ppcg 🇹🇭 882 85 39ms 14 Jan 2025 589th MeWhenI 🇻🇦 882 85 41ms 21 Apr 2025 591st SiestaGuru 882 88 411ms 9 Jan 2023 591st rifatx 882 88 390ms 5 Jul 2024 591st kmathis22 882 88 398ms 25 Sep 2025 594th Irratix 🇳🇱 882 96 57ms 4 May 2022 594th MeWhenI 🇻🇦 882 96 54ms 1 Jun 2022 594th janbehrens 🇩🇪 882 96 57ms 21 Apr 2023 594th Shanethegamer 🇺🇸 882 96 57ms 15 May 2023 594th Yewzir 🇧🇪 882 96 56ms 11 Nov 2023 594th MateuszPietrzak 🇵🇱 882 96 60ms 18 Nov 2023 594th kkoenig 882 96 58ms 21 Dec 2023 594th BlankSpruce 882 96 60ms 20 Aug 2024 594th fuzzylojik-golf 🇺🇸 882 96 60ms 14 Jun 2025 594th dokutan 882 96 68ms 34 hours ago 604th primo-ppcg 🇹🇭 881 52 219ms 5 May 2022 604th dvargas46 🇺🇸 881 52 89ms 22 Dec 2022 606th DialFrost 🇸🇬 881 56 1,180ms 1 Sep 2025 607th ovs-code 🇩🇪 881 89 438ms 24 Jul 2024 607th jipsong 🇩🇪 881 89 467ms 7 Apr 2025 607th DialFrost 🇸🇬 881 89 394ms 24 Dec 2025 607th dokutan 881 89 404ms 34 hours ago 611th nipzu 881 94 118ms 17 May 2022 611th Natanaelel 🇸🇪 881 94 118ms 17 Jun 2022 611th nkoppel 881 94 128ms 19 Oct 2022 611th ovs-code 🇩🇪 881 94 125ms 21 Jun 2023 611th mousetail 🇳🇱 881 94 130ms 12 Jan 2024 616th snoozingnewt 🇨🇦 881 95 107ms 4 Dec 2025 617th m-tkach 🇺🇦 881 112 130ms 22 Jun 2025 618th sisyphus-ppcg 🇦🇺 880 40 336ms 31 Jan 2023 618th sean-niemann 🇺🇸 880 40 326ms 8 Mar 2025 620th ovs-code 🇩🇪 880 73 340ms 22 Jul 2023 621st frosster 880 77 6ms 34 hours ago 622nd sean-niemann 🇺🇸 880 108 258ms 25 May 2024 622nd GolfingSuccess 🇬🇷 880 108 264ms 6 Sep 2025 624th GrayJoKing 🇦🇺 879 72 443ms 31 May 2022 624th Shanethegamer 🇺🇸 879 72 442ms 1 Jun 2022 624th Steffan153 🇫🇮 879 72 445ms 10 Dec 2022 627th steffan-polygolf 879 74 136ms 14 Feb 2024 627th prestosilver 🇺🇸 879 74 115ms 18 Dec 2025 629th Shanethegamer 🇺🇸 879 81 17ms 19 Dec 2023 629th emgordon154 879 81 21ms 29 Jul 2025 631st primo-ppcg 🇹🇭 878 193 107ms 14 Aug 2025 632nd Shanethegamer 🇺🇸 877 142 1,396ms 27 Mar 2025 632nd DialFrost 🇸🇬 877 142 1,477ms 28 Mar 2025 632nd emgordon154 877 142 1,573ms 10 Apr 2025 632nd GolfingSuccess 🇬🇷 877 142 1,450ms 6 Dec 2025 636th JayXon 🇺🇸 877 157 1,772ms 14 Sep 2025 637th mousetail 🇳🇱 876 40 66ms 29 Aug 2025 638th GrayJoKing 🇦🇺 876 84 37ms 19 Jun 2022 638th primo-ppcg 🇹🇭 876 84 36ms 29 Jun 2022 638th MeWhenI 🇻🇦 876 84 38ms 30 Dec 2025 First Prev 561–640 of 3,548 Next Last