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 238th postie77 924 84 369ms 19 May 2023 238th ertz1ertz 924 84 377ms 13 Sep 2024 238th Grabnukebomb 924 84 366ms 13 Sep 2024 238th Shanethegamer 🇺🇸 924 84 388ms 9 Apr 2025 238th HumanoidCPU 924 84 390ms 10 Apr 2025 238th annaproxy 924 84 416ms 11 Apr 2025 238th Re-Adventures 🇮🇳 924 84 392ms 15 Apr 2025 238th janbehrens 🇩🇪 924 84 380ms 17 Apr 2025 249th ovs-code 🇩🇪 923 60 5ms 9 Oct 2023 249th GrayJoKing 🇦🇺 923 60 4ms 11 Oct 2023 249th Lydxn 🇨🇦 923 60 5ms 11 Oct 2023 249th GolfingSuccess 🇬🇷 923 60 5ms 16 Nov 2023 249th Steffan153 🇫🇮 923 60 5ms 28 Jan 2024 249th JayXon 🇺🇸 923 60 4ms 29 Jan 2024 249th rucin93 🇵🇱 923 60 5ms 10 Jul 2024 249th sean-niemann 🇺🇸 923 60 5ms 10 Jul 2024 249th edsrzf 🇳🇿 923 60 5ms 27 days ago 258th h3ra993huskp 🇯🇵 923 90 425ms 30 Nov 2025 259th KasperKivimaeki 🇫🇮 923 103 285ms 10 Dec 2025 260th Steffan153 🇫🇮 922 67 37ms 19 Aug 2024 260th JayXon 🇺🇸 922 67 37ms 19 Aug 2024 262nd sisyphus-ppcg 🇦🇺 921 65 106ms 19 Dec 2025 262nd ovs-code 🇩🇪 921 65 118ms 19 Dec 2025 264th Lydxn 🇨🇦 921 90 128ms 6 May 2022 265th sisyphus-ppcg 🇦🇺 920 50 2,787ms 31 Jan 2023 265th saito-ta 🇯🇵 920 50 901ms 12 Dec 2024 267th Steffan153 🇫🇮 920 51 2,377ms 17 days ago 268th Herbert00709 🇵🇱 920 92 59ms 17 Nov 2023 268th 4QT0R 920 92 60ms 23 Nov 2023 268th ovs-code 🇩🇪 920 92 63ms 3 Jun 2024 271st uiamn 919 58 11ms 6 Sep 2022 271st 5quiwyrm 919 58 11ms 29 Sep 2022 271st alasdair-greenland 919 58 11ms 13 Jan 2023 271st kirjavascript 919 58 11ms 4 Aug 2025 271st Posandu 919 58 10ms 26 Aug 2025 271st mrxz 🇳🇱 919 58 11ms 3 Sep 2025 277th primo-ppcg 🇹🇭 917 24 163ms 10 Dec 2022 278th Mukundan314 917 55 1,616ms 27 Dec 2025 279th btnlq 917 59 5ms 6 Nov 2022 279th DialFrost 🇸🇬 917 59 5ms 23 Dec 2025 281st Irratix 🇳🇱 917 61 45ms 7 May 2022 281st TFeld00 🇩🇰 917 61 25ms 17 May 2022 281st hallvabo 🇳🇴 917 61 21ms 4 Sep 2022 281st DialFrost 🇸🇬 917 61 24ms 19 Dec 2022 281st anter69 🇭🇺 917 61 22ms 19 Dec 2022 281st Alex-x90 🇺🇸 917 61 21ms 27 Dec 2022 281st commandz0 🇺🇸 917 61 21ms 22 Aug 2023 281st fgrosshans 🇫🇷 917 61 19ms 22 Jul 2024 281st duckyluuk 🇳🇱 917 61 21ms 15 Aug 2024 281st rucin93 🇵🇱 917 61 19ms 31 May 2025 281st katss2 917 61 19ms 17 Aug 2025 281st snoozingnewt 🇨🇦 917 61 19ms 6 Dec 2025 281st Flekay 🇩🇪 917 61 18ms 15 Feb 2026 281st JOrE20 917 61 17ms 25 Feb 2026 281st jusaka 917 61 18ms 3 days ago 296th JayXon 🇺🇸 917 69 554ms 5 Apr 2023 296th Lydxn 🇨🇦 917 69 568ms 9 Apr 2023 298th GrayJoKing 🇦🇺 917 74 4ms 23 Dec 2025 298th FlyingPenguin223 917 74 6ms 29 Dec 2025 300th MichalMarsalek 🇨🇿 916 71 137ms 5 May 2022 300th Lydxn 🇨🇦 916 71 132ms 7 May 2022 300th GrayJoKing 🇦🇺 916 71 139ms 8 May 2022 300th JayXon 🇺🇸 916 71 128ms 8 May 2022 300th Steffan153 🇫🇮 916 71 131ms 9 Mar 2023 300th Shanethegamer 🇺🇸 916 71 126ms 15 May 2023 300th MeWhenI 🇻🇦 916 71 133ms 8 Aug 2023 300th sean-niemann 🇺🇸 916 71 129ms 9 Jan 2025 308th xnor-gate 915 63 187ms 20 Jan 2025 309th Steffan153 🇫🇮 915 76 12ms 15 May 2023 309th primo-ppcg 🇹🇭 915 76 20ms 15 May 2023 309th Lydxn 🇨🇦 915 76 8ms 22 May 2023 309th GrayJoKing 🇦🇺 915 76 12ms 24 Aug 2023 309th kg583 🇺🇸 915 76 12ms 22 Feb 2026 309th Steffan153 🇫🇮 915 76 23ms 17 days ago 315th pardouin 🇫🇷 914 72 2,717ms 21 May 2025 316th arctouch-cristiannevianna 914 85 345ms 3 Apr 2023 316th Widgitty 914 85 368ms 1 Sep 2023 316th tomtheisen 🇺🇸 914 85 424ms 10 Apr 2025 319th kmathis22 913 91 370ms 20 Nov 2025 320th primo-ppcg 🇹🇭 912 61 7ms 6 May 2022 First Prev 241–320 of 3,641 Next Last