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 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 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 ><> ALGOL 68 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 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 ><> ALGOL 68 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 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 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 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 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 240th JayXon 🇺🇸 924 70 120ms 17 Oct 2022 242nd roavin 924 84 379ms 23 Jun 2022 242nd tkr-sh 🇰🇵 924 84 402ms 20 Aug 2022 242nd Nickmiste 924 84 385ms 9 Nov 2022 242nd postie77 924 84 400ms 19 May 2023 242nd ertz1ertz 924 84 414ms 13 Sep 2024 242nd Grabnukebomb 924 84 391ms 13 Sep 2024 242nd Shanethegamer 🇺🇸 924 84 425ms 9 Apr 2025 242nd HumanoidCPU 924 84 423ms 10 Apr 2025 242nd annaproxy 924 84 406ms 11 Apr 2025 242nd Re-Adventures 🇮🇳 924 84 402ms 15 Apr 2025 242nd janbehrens 🇩🇪 924 84 417ms 17 Apr 2025 253rd ovs-code 🇩🇪 923 60 5ms 9 Oct 2023 253rd GrayJoKing 🇦🇺 923 60 4ms 11 Oct 2023 253rd Lydxn 🇨🇦 923 60 4ms 11 Oct 2023 253rd GolfingSuccess 🇬🇷 923 60 4ms 16 Nov 2023 253rd Steffan153 🇫🇮 923 60 4ms 28 Jan 2024 253rd JayXon 🇺🇸 923 60 4ms 29 Jan 2024 253rd rucin93 🇵🇱 923 60 5ms 10 Jul 2024 253rd sean-niemann 🇺🇸 923 60 5ms 10 Jul 2024 253rd edsrzf 🇳🇿 923 60 5ms 6 hours ago 262nd h3ra993huskp 🇯🇵 923 90 425ms 30 Nov 2025 263rd KasperKivimaeki 🇫🇮 923 103 285ms 10 Dec 2025 264th Steffan153 🇫🇮 922 67 37ms 19 Aug 2024 264th JayXon 🇺🇸 922 67 37ms 19 Aug 2024 266th sisyphus-ppcg 🇦🇺 920 65 106ms 19 Dec 2025 266th ovs-code 🇩🇪 920 65 123ms 19 Dec 2025 268th Lydxn 🇨🇦 920 90 127ms 6 May 2022 269th Herbert00709 🇵🇱 920 92 54ms 17 Nov 2023 269th 4QT0R 920 92 54ms 23 Nov 2023 269th ovs-code 🇩🇪 920 92 54ms 3 Jun 2024 272nd sisyphus-ppcg 🇦🇺 919 50 2,596ms 31 Jan 2023 272nd saito-ta 🇯🇵 919 50 868ms 12 Dec 2024 274th uiamn 919 58 14ms 6 Sep 2022 274th 5quiwyrm 919 58 12ms 29 Sep 2022 274th alasdair-greenland 919 58 14ms 13 Jan 2023 274th kirjavascript 919 58 11ms 4 Aug 2025 274th Posandu 919 58 12ms 26 Aug 2025 274th mrxz 🇳🇱 919 58 11ms 3 Sep 2025 280th edsrzf 🇳🇿 918 52 855ms 7 hours ago 280th Steffan153 🇫🇮 918 52 965ms 6 hours ago 282nd primo-ppcg 🇹🇭 917 24 169ms 10 Dec 2022 283rd nwellnhof 🇩🇪 917 51 35ms 4 May 2022 283rd primo-ppcg 🇹🇭 917 51 38ms 6 May 2022 283rd janlelis 917 51 36ms 10 May 2022 283rd Natanaelel 🇸🇪 917 51 39ms 2 Jun 2022 287th Mukundan314 917 55 1,616ms 27 Dec 2025 288th btnlq 917 59 5ms 6 Nov 2022 288th DialFrost 🇸🇬 917 59 5ms 23 Dec 2025 290th JayXon 🇺🇸 917 69 554ms 5 Apr 2023 290th Lydxn 🇨🇦 917 69 568ms 9 Apr 2023 292nd GrayJoKing 🇦🇺 917 74 4ms 23 Dec 2025 292nd FlyingPenguin223 917 74 6ms 29 Dec 2025 294th Irratix 🇳🇱 916 61 45ms 7 May 2022 294th TFeld00 🇩🇰 916 61 25ms 17 May 2022 294th hallvabo 🇳🇴 916 61 21ms 4 Sep 2022 294th DialFrost 🇸🇬 916 61 24ms 19 Dec 2022 294th anter69 🇭🇺 916 61 22ms 19 Dec 2022 294th Alex-x90 🇺🇸 916 61 21ms 27 Dec 2022 294th commandz0 🇺🇸 916 61 21ms 22 Aug 2023 294th fgrosshans 🇫🇷 916 61 19ms 22 Jul 2024 294th duckyluuk 🇳🇱 916 61 21ms 15 Aug 2024 294th rucin93 🇵🇱 916 61 19ms 31 May 2025 294th katss2 916 61 19ms 17 Aug 2025 294th snoozingnewt 🇨🇦 916 61 19ms 6 Dec 2025 294th Flekay 🇩🇪 916 61 18ms 22 days ago 294th JOrE20 916 61 17ms 12 days ago 308th MichalMarsalek 🇨🇿 916 71 137ms 5 May 2022 308th Lydxn 🇨🇦 916 71 135ms 7 May 2022 308th GrayJoKing 🇦🇺 916 71 139ms 8 May 2022 308th JayXon 🇺🇸 916 71 128ms 8 May 2022 308th Steffan153 🇫🇮 916 71 131ms 9 Mar 2023 308th Shanethegamer 🇺🇸 916 71 126ms 15 May 2023 308th MeWhenI 🇻🇦 916 71 133ms 8 Aug 2023 308th sean-niemann 🇺🇸 916 71 129ms 9 Jan 2025 316th xnor-gate 915 63 187ms 20 Jan 2025 317th Steffan153 🇫🇮 915 76 12ms 15 May 2023 317th primo-ppcg 🇹🇭 915 76 20ms 15 May 2023 317th Lydxn 🇨🇦 915 76 8ms 22 May 2023 317th GrayJoKing 🇦🇺 915 76 12ms 24 Aug 2023 First Prev 241–320 of 3,592 Next Last