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 Rectangle Fill 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 Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Chars Time Submitted 319th Lydxn 🇨🇦 915 76 8ms 22 May 2023 319th GrayJoKing 🇦🇺 915 76 12ms 24 Aug 2023 319th kg583 🇺🇸 915 76 12ms 21 days ago 324th pardouin 🇫🇷 913 72 2,191ms 21 May 2025 325th Steffan153 🇫🇮 913 77 25ms 21 days ago 325th kg583 🇺🇸 913 77 20ms 3 days ago 327th arctouch-cristiannevianna 913 85 361ms 3 Apr 2023 327th Widgitty 913 85 396ms 1 Sep 2023 327th tomtheisen 🇺🇸 913 85 424ms 10 Apr 2025 330th kmathis22 913 91 370ms 20 Nov 2025 331st primo-ppcg 🇹🇭 912 61 8ms 6 May 2022 331st sisyphus-ppcg 🇦🇺 912 61 9ms 14 Jul 2022 333rd Shanethegamer 🇺🇸 912 86 461ms 15 May 2023 333rd JayXon 🇺🇸 912 86 481ms 15 May 2023 333rd Steffan153 🇫🇮 912 86 460ms 16 May 2023 333rd Lydxn 🇨🇦 912 86 456ms 16 May 2023 333rd GrayJoKing 🇦🇺 912 86 461ms 11 Aug 2023 333rd sean-niemann 🇺🇸 912 86 468ms 11 Jul 2024 339th Bubbler-4 911 33 2,528ms 6 May 2022 339th rak1507 🇬🇧 911 33 108ms 8 May 2022 339th ngn 🇧🇬 911 33 25ms 11 May 2022 339th zacjl 911 33 32ms 3 Jun 2025 339th GrayJoKing 🇦🇺 911 33 13ms 4 Jun 2025 339th HPWiz 🇳🇿 911 33 9ms 16 Nov 2025 345th Lydxn 🇨🇦 911 70 148ms 7 May 2022 345th JayXon 🇺🇸 911 70 143ms 7 May 2022 347th Steffan153 🇫🇮 911 71 124ms 14 Oct 2022 347th Shanethegamer 🇺🇸 911 71 125ms 15 Oct 2022 347th stefangimmillaro 911 71 114ms 16 Oct 2022 347th MeWhenI 🇻🇦 911 71 127ms 16 Oct 2022 351st annaproxy 911 78 116ms 13 Jan 2023 351st IanUtley 911 78 117ms 12 Nov 2023 351st GrayJoKing 🇦🇺 911 78 81ms 28 Nov 2023 354th andersk 🇺🇸 911 91 130ms 25 Oct 2022 354th Super-Pizza 🇨🇦 911 91 131ms 4 Dec 2022 354th klixel 🇨🇦 911 91 128ms 20 May 2023 354th lynn 911 91 139ms 6 Jul 2024 354th edsrzf 🇳🇿 911 91 134ms 29 Nov 2024 354th DialFrost 🇸🇬 911 91 130ms 7 Apr 2025 354th elgan65536 🇺🇸 911 91 131ms 10 Feb 2026 354th fantaize 911 91 123ms 4 days ago 362nd tailorspy 910 93 56ms 27 May 2024 362nd sean-niemann 🇺🇸 910 93 59ms 9 Jun 2025 362nd KasperKivimaeki 🇫🇮 910 93 62ms 26 Oct 2025 365th Lydxn 🇨🇦 909 47 257ms 5 May 2022 366th JayXon 🇺🇸 909 53 411ms 17 Aug 2024 367th Lydxn 🇨🇦 909 81 39ms 1 Apr 2023 368th Shanethegamer 🇺🇸 908 61 5ms 9 Oct 2023 369th nai62 908 68 7ms 27 Aug 2022 370th Steffan153 🇫🇮 908 73 68ms 16 days ago 371st ovs-code 🇩🇪 908 75 67ms 12 Sep 2024 371st Kacarott 🇦🇺 908 75 62ms 13 Sep 2024 373rd sean-niemann 🇺🇸 907 54 140ms 6 Aug 2024 373rd Steffan153 🇫🇮 907 54 134ms 6 Aug 2024 373rd lukegustafson 🇺🇸 907 54 139ms 7 Aug 2024 373rd pardouin 🇫🇷 907 54 145ms 8 Aug 2024 373rd Lydxn 🇨🇦 907 54 171ms 9 Aug 2024 378th lynn 907 78 1,422ms 5 May 2022 379th sean-niemann 🇺🇸 906 66 112ms 29 May 2025 380th GrayJoKing 🇦🇺 905 71 321ms 10 Aug 2023 381st sean-niemann 🇺🇸 905 75 5ms 23 Dec 2025 381st Steffan153 🇫🇮 905 75 5ms 11 Feb 2026 383rd primo-ppcg 🇹🇭 905 93 30ms 7 May 2022 383rd AlephSquirrel 905 93 26ms 21 Jan 2023 383rd kg583 🇺🇸 905 93 29ms 26 Dec 2024 383rd CLOStrophobic 🇮🇹 905 93 30ms 17 Jan 2025 383rd edsrzf 🇳🇿 905 93 30ms 3 Jul 2025 388th JayXon 🇺🇸 905 105 291ms 4 Oct 2025 389th KrausRaus 🇺🇸 904 59 11ms 4 May 2022 389th voytxt 🇨🇿 904 59 12ms 4 May 2022 389th KingSkyrock 🇺🇸 904 59 11ms 18 May 2022 389th ZakkkkAttackkkk 🇵🇭 904 59 13ms 14 Jul 2022 389th aksyristos 904 59 11ms 28 Oct 2022 389th nstearns96 🇬🇧 904 59 11ms 28 Nov 2022 389th janbehrens 🇩🇪 904 59 10ms 17 May 2023 389th Shanethegamer 🇺🇸 904 59 12ms 25 May 2023 389th Maznek 904 59 11ms 26 Jun 2023 389th SpiritAxolotl 🇺🇸 904 59 12ms 20 Mar 2024 389th Andrey-Plotnikov 904 59 10ms 19 May 2024 389th emgordon154 904 59 16ms 5 Aug 2024 First Prev 321–400 of 3,600 Next Last