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 641st GrayJoKing 🇦🇺 876 84 35ms 19 Jun 2022 641st primo-ppcg 🇹🇭 876 84 36ms 29 Jun 2022 641st MeWhenI 🇻🇦 876 84 38ms 30 Dec 2025 644th Shanethegamer 🇺🇸 875 51 511ms 15 May 2023 645th rucin93 🇵🇱 874 57 144ms 4 Aug 2024 645th dokutan 874 57 135ms 9 Aug 2024 647th c0d3-4-F00d 🇩🇪 874 61 12ms 6 May 2022 647th jackkav 874 61 12ms 26 Jun 2022 647th TechNolaByte 874 61 11ms 6 Jul 2022 647th Heathcorp 🇦🇺 874 61 11ms 17 Jul 2022 647th C0de5mith 🇺🇸 874 61 12ms 3 Aug 2022 647th sebipopa 🇷🇴 874 61 10ms 18 Aug 2022 647th moikaturns 🇬🇧 874 61 12ms 25 Sep 2022 647th FlorianCassayre 🇫🇷 874 61 11ms 27 Sep 2022 647th Mazn3k 874 61 11ms 1 Feb 2023 647th tvcv901 874 61 11ms 22 Mar 2023 647th unfinishedprogram 874 61 11ms 19 Jul 2023 647th snoozingnewt 🇨🇦 874 61 10ms 23 Sep 2023 647th funnyboy-roks 874 61 12ms 9 May 2024 647th bac0id 874 61 10ms 29 Jun 2024 647th madex 🇩🇪 874 61 12ms 9 Jul 2024 647th FortuiteMan 🇫🇷 874 61 11ms 10 Oct 2024 647th RobertHoeh 874 61 12ms 5 Apr 2025 647th LvLError 874 61 11ms 29 May 2025 647th miles-evan 874 61 13ms 5 Aug 2025 647th alexsave 874 61 10ms 13 Oct 2025 667th frankgraziano 874 75 16ms 86 mins ago 668th dokutan 873 62 5ms 28 Apr 2025 669th NerdyMcNerd42 873 64 20ms 26 Oct 2022 669th tpasfieldERAU 873 64 23ms 14 Nov 2022 669th CheeseCake628 🇳🇴 873 64 23ms 6 Jan 2023 669th adamnielson42 🇺🇸 873 64 19ms 25 Apr 2023 669th nathsou 🇫🇷 873 64 21ms 2 Sep 2023 669th zwxzwxzwx21 873 64 24ms 30 Jan 2024 669th steffan-polygolf 873 64 21ms 8 Mar 2024 669th Jacob385 873 64 59ms 4 Apr 2024 669th gallium-gonzollium 873 64 28ms 26 Aug 2024 678th Shanethegamer 🇺🇸 873 66 172ms 4 May 2022 678th scpchicken 🇵🇼 873 66 254ms 5 May 2022 678th sisyphus-ppcg 🇦🇺 873 66 173ms 6 May 2022 678th Natanaelel 🇸🇪 873 66 144ms 15 Jun 2022 678th Z-snails 873 66 254ms 27 Feb 2023 678th Jeremy-Stafford 873 66 258ms 27 Feb 2023 678th alomiF 873 66 293ms 1 Sep 2023 678th btnlq 873 66 145ms 17 Oct 2023 678th Shengxuan-Zhang 873 66 278ms 3 days ago 687th johnnythedoggie 873 72 87ms 13 May 2022 687th kaascevich 873 72 90ms 8 Jul 2025 689th DialFrost 🇸🇬 873 73 90ms 3 Jun 2025 690th inventshah 873 97 57ms 6 May 2022 690th roupiq 🇵🇱 873 97 55ms 22 Nov 2023 690th emgordon154 873 97 53ms 15 days ago 693rd HPWiz 🇳🇿 872 49 265ms 4 May 2022 693rd JayXon 🇺🇸 872 49 250ms 5 May 2022 693rd Steffan153 🇫🇮 872 49 256ms 10 Dec 2022 693rd ovs-code 🇩🇪 872 49 403ms 24 Oct 2023 693rd sean-niemann 🇺🇸 872 49 268ms 12 Jul 2024 698th DialFrost 🇸🇬 872 86 40ms 24 Oct 2024 698th stefangimmillaro 872 86 39ms 14 Jan 2025 700th c0d3-4-F00d 🇩🇪 872 89 368ms 5 May 2022 700th fkantelberg 872 89 388ms 15 Jul 2023 700th bac0id 872 89 374ms 26 Sep 2023 700th TRexOnGit 872 89 423ms 16 Feb 2024 704th janbehrens 🇩🇪 872 90 467ms 21 Apr 2023 704th Yewzir 🇧🇪 872 90 459ms 22 Apr 2023 704th Ripick 872 90 459ms 27 Nov 2024 704th emgordon154 872 90 476ms 10 Dec 2025 708th emgordon154 872 96 104ms 3 Dec 2025 709th MeWhenI 🇻🇦 872 109 281ms 9 Feb 2023 710th GolfingSuccess 🇬🇷 870 71 2ms 5 May 2022 710th emplv 🇱🇻 870 71 2ms 5 May 2022 710th JayXon 🇺🇸 870 71 2ms 7 May 2022 710th m-tkach 🇺🇦 870 71 2ms 15 May 2022 710th nwellnhof 🇩🇪 870 71 2ms 5 Jun 2022 710th Irratix 🇳🇱 870 71 2ms 13 Jun 2022 710th michael-pruglo 🇺🇦 870 71 2ms 13 Jul 2022 710th stefangimmillaro 870 71 2ms 2 Jun 2023 710th kkoenig 870 71 2ms 21 Dec 2023 710th JohandeRuiter 🇳🇱 870 71 2ms 14 Sep 2024 710th masinag 🇮🇹 870 71 2ms 6 Oct 2024 First Prev 641–720 of 3,572 Next Last