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 319th tomtheisen 🇺🇸 913 85 422ms 10 Apr 2025 322nd kmathis22 913 91 370ms 20 Nov 2025 323rd primo-ppcg 🇹🇭 912 61 7ms 6 May 2022 323rd sisyphus-ppcg 🇦🇺 912 61 10ms 14 Jul 2022 325th pardouin 🇫🇷 912 72 2,191ms 21 May 2025 326th Shanethegamer 🇺🇸 912 86 461ms 15 May 2023 326th JayXon 🇺🇸 912 86 481ms 15 May 2023 326th Steffan153 🇫🇮 912 86 460ms 16 May 2023 326th Lydxn 🇨🇦 912 86 456ms 16 May 2023 326th GrayJoKing 🇦🇺 912 86 461ms 11 Aug 2023 326th sean-niemann 🇺🇸 912 86 468ms 11 Jul 2024 332nd Lydxn 🇨🇦 911 70 100ms 7 May 2022 332nd JayXon 🇺🇸 911 70 101ms 7 May 2022 334th Steffan153 🇫🇮 911 71 110ms 14 Oct 2022 334th Shanethegamer 🇺🇸 911 71 111ms 15 Oct 2022 334th stefangimmillaro 911 71 115ms 16 Oct 2022 334th MeWhenI 🇻🇦 911 71 116ms 16 Oct 2022 338th annaproxy 911 78 116ms 13 Jan 2023 338th IanUtley 911 78 117ms 12 Nov 2023 338th GrayJoKing 🇦🇺 911 78 81ms 28 Nov 2023 341st Bubbler-4 910 33 2,528ms 6 May 2022 341st rak1507 🇬🇧 910 33 108ms 8 May 2022 341st ngn 🇧🇬 910 33 25ms 11 May 2022 341st zacjl 910 33 32ms 3 Jun 2025 341st GrayJoKing 🇦🇺 910 33 13ms 4 Jun 2025 341st HPWiz 🇳🇿 910 33 9ms 16 Nov 2025 347th andersk 🇺🇸 910 91 127ms 25 Oct 2022 347th Super-Pizza 🇨🇦 910 91 124ms 4 Dec 2022 347th klixel 🇨🇦 910 91 134ms 20 May 2023 347th lynn 910 91 126ms 6 Jul 2024 347th edsrzf 🇳🇿 910 91 126ms 29 Nov 2024 347th DialFrost 🇸🇬 910 91 125ms 7 Apr 2025 347th elgan65536 🇺🇸 910 91 128ms 13 days ago 354th tailorspy 910 93 54ms 27 May 2024 354th sean-niemann 🇺🇸 910 93 53ms 9 Jun 2025 354th KasperKivimaeki 🇫🇮 910 93 56ms 26 Oct 2025 357th Lydxn 🇨🇦 909 47 257ms 5 May 2022 358th JayXon 🇺🇸 909 53 411ms 17 Aug 2024 359th Lydxn 🇨🇦 909 81 39ms 1 Apr 2023 360th Shanethegamer 🇺🇸 908 61 3ms 9 Oct 2023 360th edsrzf 🇳🇿 908 61 3ms 4 Jul 2025 362nd nai62 908 68 7ms 27 Aug 2022 363rd ovs-code 🇩🇪 908 75 67ms 12 Sep 2024 363rd Kacarott 🇦🇺 908 75 62ms 13 Sep 2024 365th sean-niemann 🇺🇸 907 54 129ms 6 Aug 2024 365th Steffan153 🇫🇮 907 54 128ms 6 Aug 2024 365th lukegustafson 🇺🇸 907 54 131ms 7 Aug 2024 365th pardouin 🇫🇷 907 54 138ms 8 Aug 2024 365th Lydxn 🇨🇦 907 54 135ms 9 Aug 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 13 days ago 400th edsrzf 🇳🇿 903 72 135ms 3 Jul 2025 First Prev 321–400 of 3,572 Next Last