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 318th GrayJoKing 🇦🇺 915 76 12ms 24 Aug 2023 318th kg583 🇺🇸 915 76 12ms 17 days ago 323rd Steffan153 🇫🇮 913 77 25ms 17 days ago 323rd kg583 🇺🇸 913 77 20ms 2 hours ago 325th arctouch-cristiannevianna 913 85 391ms 3 Apr 2023 325th Widgitty 913 85 403ms 1 Sep 2023 325th tomtheisen 🇺🇸 913 85 422ms 10 Apr 2025 328th kmathis22 913 91 370ms 20 Nov 2025 329th primo-ppcg 🇹🇭 912 61 7ms 6 May 2022 329th sisyphus-ppcg 🇦🇺 912 61 10ms 14 Jul 2022 331st pardouin 🇫🇷 912 72 2,191ms 21 May 2025 332nd Shanethegamer 🇺🇸 912 86 461ms 15 May 2023 332nd JayXon 🇺🇸 912 86 481ms 15 May 2023 332nd Steffan153 🇫🇮 912 86 460ms 16 May 2023 332nd Lydxn 🇨🇦 912 86 456ms 16 May 2023 332nd GrayJoKing 🇦🇺 912 86 461ms 11 Aug 2023 332nd sean-niemann 🇺🇸 912 86 468ms 11 Jul 2024 338th Bubbler-4 911 33 2,528ms 6 May 2022 338th rak1507 🇬🇧 911 33 108ms 8 May 2022 338th ngn 🇧🇬 911 33 25ms 11 May 2022 338th zacjl 911 33 32ms 3 Jun 2025 338th GrayJoKing 🇦🇺 911 33 13ms 4 Jun 2025 338th HPWiz 🇳🇿 911 33 9ms 16 Nov 2025 344th Lydxn 🇨🇦 911 70 148ms 7 May 2022 344th JayXon 🇺🇸 911 70 143ms 7 May 2022 346th Steffan153 🇫🇮 911 71 124ms 14 Oct 2022 346th Shanethegamer 🇺🇸 911 71 125ms 15 Oct 2022 346th stefangimmillaro 911 71 114ms 16 Oct 2022 346th MeWhenI 🇻🇦 911 71 127ms 16 Oct 2022 350th annaproxy 911 78 116ms 13 Jan 2023 350th IanUtley 911 78 117ms 12 Nov 2023 350th GrayJoKing 🇦🇺 911 78 81ms 28 Nov 2023 353rd andersk 🇺🇸 911 91 130ms 25 Oct 2022 353rd Super-Pizza 🇨🇦 911 91 131ms 4 Dec 2022 353rd klixel 🇨🇦 911 91 128ms 20 May 2023 353rd lynn 911 91 139ms 6 Jul 2024 353rd edsrzf 🇳🇿 911 91 134ms 29 Nov 2024 353rd DialFrost 🇸🇬 911 91 130ms 7 Apr 2025 353rd elgan65536 🇺🇸 911 91 131ms 10 Feb 2026 353rd fantaize 911 91 126ms 22 hours ago 361st tailorspy 910 93 60ms 27 May 2024 361st sean-niemann 🇺🇸 910 93 59ms 9 Jun 2025 361st KasperKivimaeki 🇫🇮 910 93 62ms 26 Oct 2025 364th Lydxn 🇨🇦 909 47 257ms 5 May 2022 365th JayXon 🇺🇸 909 53 411ms 17 Aug 2024 366th Lydxn 🇨🇦 909 81 39ms 1 Apr 2023 367th Shanethegamer 🇺🇸 908 61 5ms 9 Oct 2023 368th nai62 908 68 7ms 27 Aug 2022 369th Steffan153 🇫🇮 908 73 68ms 12 days ago 370th ovs-code 🇩🇪 908 75 67ms 12 Sep 2024 370th Kacarott 🇦🇺 908 75 62ms 13 Sep 2024 372nd sean-niemann 🇺🇸 907 54 146ms 6 Aug 2024 372nd Steffan153 🇫🇮 907 54 133ms 6 Aug 2024 372nd lukegustafson 🇺🇸 907 54 129ms 7 Aug 2024 372nd pardouin 🇫🇷 907 54 142ms 8 Aug 2024 372nd Lydxn 🇨🇦 907 54 139ms 9 Aug 2024 377th lynn 907 78 1,382ms 5 May 2022 378th sean-niemann 🇺🇸 906 66 108ms 29 May 2025 379th GrayJoKing 🇦🇺 905 71 321ms 10 Aug 2023 380th sean-niemann 🇺🇸 905 75 5ms 23 Dec 2025 380th Steffan153 🇫🇮 905 75 5ms 11 Feb 2026 382nd primo-ppcg 🇹🇭 905 93 30ms 7 May 2022 382nd AlephSquirrel 905 93 26ms 21 Jan 2023 382nd kg583 🇺🇸 905 93 29ms 26 Dec 2024 382nd CLOStrophobic 🇮🇹 905 93 30ms 17 Jan 2025 382nd edsrzf 🇳🇿 905 93 30ms 3 Jul 2025 387th JayXon 🇺🇸 905 105 291ms 4 Oct 2025 388th KrausRaus 🇺🇸 904 59 11ms 4 May 2022 388th voytxt 🇨🇿 904 59 10ms 4 May 2022 388th KingSkyrock 🇺🇸 904 59 10ms 18 May 2022 388th ZakkkkAttackkkk 🇵🇭 904 59 12ms 14 Jul 2022 388th aksyristos 904 59 12ms 28 Oct 2022 388th nstearns96 🇬🇧 904 59 10ms 28 Nov 2022 388th janbehrens 🇩🇪 904 59 11ms 17 May 2023 388th Shanethegamer 🇺🇸 904 59 11ms 25 May 2023 388th Maznek 904 59 15ms 26 Jun 2023 388th SpiritAxolotl 🇺🇸 904 59 11ms 20 Mar 2024 388th Andrey-Plotnikov 904 59 11ms 19 May 2024 388th emgordon154 904 59 12ms 5 Aug 2024 388th duckyluuk 🇳🇱 904 59 11ms 3 Oct 2024 First Prev 321–400 of 3,596 Next Last