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 ><> 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 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 318th GrayJoKing 🇦🇺 915 76 12ms 24 Aug 2023 318th kg583 🇺🇸 915 76 12ms 11 hours ago 323rd Steffan153 🇫🇮 913 77 25ms 10 hours ago 324th arctouch-cristiannevianna 913 85 391ms 3 Apr 2023 324th Widgitty 913 85 403ms 1 Sep 2023 324th tomtheisen 🇺🇸 913 85 422ms 10 Apr 2025 327th kmathis22 913 91 370ms 20 Nov 2025 328th primo-ppcg 🇹🇭 912 61 7ms 6 May 2022 328th sisyphus-ppcg 🇦🇺 912 61 10ms 14 Jul 2022 330th pardouin 🇫🇷 912 72 2,191ms 21 May 2025 331st Shanethegamer 🇺🇸 912 86 461ms 15 May 2023 331st JayXon 🇺🇸 912 86 481ms 15 May 2023 331st Steffan153 🇫🇮 912 86 460ms 16 May 2023 331st Lydxn 🇨🇦 912 86 456ms 16 May 2023 331st GrayJoKing 🇦🇺 912 86 461ms 11 Aug 2023 331st sean-niemann 🇺🇸 912 86 468ms 11 Jul 2024 337th Lydxn 🇨🇦 911 70 100ms 7 May 2022 337th JayXon 🇺🇸 911 70 101ms 7 May 2022 339th Steffan153 🇫🇮 911 71 110ms 14 Oct 2022 339th Shanethegamer 🇺🇸 911 71 111ms 15 Oct 2022 339th stefangimmillaro 911 71 115ms 16 Oct 2022 339th MeWhenI 🇻🇦 911 71 116ms 16 Oct 2022 343rd annaproxy 911 78 116ms 13 Jan 2023 343rd IanUtley 911 78 117ms 12 Nov 2023 343rd GrayJoKing 🇦🇺 911 78 81ms 28 Nov 2023 346th Bubbler-4 910 33 2,528ms 6 May 2022 346th rak1507 🇬🇧 910 33 108ms 8 May 2022 346th ngn 🇧🇬 910 33 25ms 11 May 2022 346th zacjl 910 33 32ms 3 Jun 2025 346th GrayJoKing 🇦🇺 910 33 13ms 4 Jun 2025 346th HPWiz 🇳🇿 910 33 9ms 16 Nov 2025 352nd andersk 🇺🇸 910 91 127ms 25 Oct 2022 352nd Super-Pizza 🇨🇦 910 91 124ms 4 Dec 2022 352nd klixel 🇨🇦 910 91 134ms 20 May 2023 352nd lynn 910 91 126ms 6 Jul 2024 352nd edsrzf 🇳🇿 910 91 126ms 29 Nov 2024 352nd DialFrost 🇸🇬 910 91 125ms 7 Apr 2025 352nd elgan65536 🇺🇸 910 91 128ms 11 days ago 359th tailorspy 910 93 54ms 27 May 2024 359th sean-niemann 🇺🇸 910 93 53ms 9 Jun 2025 359th KasperKivimaeki 🇫🇮 910 93 56ms 26 Oct 2025 362nd Lydxn 🇨🇦 909 47 257ms 5 May 2022 363rd JayXon 🇺🇸 909 53 411ms 17 Aug 2024 364th Lydxn 🇨🇦 909 81 39ms 1 Apr 2023 365th Shanethegamer 🇺🇸 908 61 3ms 9 Oct 2023 365th edsrzf 🇳🇿 908 61 3ms 4 Jul 2025 367th nai62 908 68 7ms 27 Aug 2022 368th ovs-code 🇩🇪 908 75 67ms 12 Sep 2024 368th Kacarott 🇦🇺 908 75 62ms 13 Sep 2024 370th GrayJoKing 🇦🇺 907 74 66ms 1 Nov 2023 371st lynn 907 78 1,382ms 5 May 2022 372nd sean-niemann 🇺🇸 906 66 108ms 29 May 2025 373rd GrayJoKing 🇦🇺 905 71 321ms 10 Aug 2023 374th primo-ppcg 🇹🇭 905 93 30ms 7 May 2022 374th AlephSquirrel 905 93 26ms 21 Jan 2023 374th kg583 🇺🇸 905 93 29ms 26 Dec 2024 374th CLOStrophobic 🇮🇹 905 93 30ms 17 Jan 2025 374th edsrzf 🇳🇿 905 93 30ms 3 Jul 2025 379th JayXon 🇺🇸 905 105 296ms 4 Oct 2025 380th KrausRaus 🇺🇸 904 59 16ms 4 May 2022 380th voytxt 🇨🇿 904 59 14ms 4 May 2022 380th KingSkyrock 🇺🇸 904 59 12ms 18 May 2022 380th ZakkkkAttackkkk 🇵🇭 904 59 11ms 14 Jul 2022 380th aksyristos 904 59 10ms 28 Oct 2022 380th nstearns96 🇬🇧 904 59 11ms 28 Nov 2022 380th janbehrens 🇩🇪 904 59 11ms 17 May 2023 380th Shanethegamer 🇺🇸 904 59 11ms 25 May 2023 380th Maznek 904 59 12ms 26 Jun 2023 380th SpiritAxolotl 🇺🇸 904 59 12ms 20 Mar 2024 380th Andrey-Plotnikov 904 59 14ms 19 May 2024 380th emgordon154 904 59 11ms 5 Aug 2024 380th duckyluuk 🇳🇱 904 59 12ms 3 Oct 2024 380th lifthrasiir 🇰🇷 904 59 12ms 23 Nov 2024 380th fuzzylojik-golf 🇺🇸 904 59 13ms 1 Jun 2025 380th acollett89 904 59 11ms 17 Jun 2025 380th iczelia 🇩🇪 904 59 13ms 23 Sep 2025 380th Yax42 🇫🇷 904 59 11ms 20 Jan 2026 398th sean-niemann 🇺🇸 904 75 5ms 23 Dec 2025 398th Steffan153 🇫🇮 904 75 5ms 11 days ago 400th edsrzf 🇳🇿 903 72 135ms 3 Jul 2025 First Prev 321–400 of 3,571 Next Last