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 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 Multitap Input 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 ><> 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 ALGOL 68 APL ArkScript Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> 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 ALGOL 68 APL ArkScript Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight 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 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 Multitap Input 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 146th snoozingnewt 🇨🇦 934 89 394ms 23 Nov 2025 146th ScottHamper 934 89 436ms 30 Nov 2025 146th KasperKivimaeki 🇫🇮 934 89 335ms 30 Nov 2025 164th primo-ppcg 🇹🇭 933 58 5ms 13 Nov 2022 164th clockworknazo 933 58 6ms 15 Nov 2022 164th Lydxn 🇨🇦 933 58 6ms 7 Feb 2023 164th xsot 🇸🇬 933 58 6ms 28 Jun 2024 164th Salutations45 933 58 6ms 18 Dec 2024 164th canissimia 🇦🇶 933 58 6ms 12 Dec 2025 170th ovs-code 🇩🇪 932 60 20ms 4 May 2022 170th m-tkach 🇺🇦 932 60 17ms 4 May 2022 170th btnlq 932 60 23ms 5 May 2022 170th orthoplex 🇨🇽 932 60 23ms 9 Oct 2022 170th FlorianCassayre 🇫🇷 932 60 19ms 7 Nov 2022 170th SirBogman 🇺🇸 932 60 19ms 20 Nov 2022 170th QuincyNash 🇺🇸 932 60 18ms 1 Dec 2022 170th Steffan153 🇫🇮 932 60 19ms 19 Dec 2022 170th SirFireball3521 932 60 16ms 26 Jan 2023 170th Shanethegamer 🇺🇸 932 60 19ms 25 May 2023 170th CornerMercury 🇬🇧 932 60 20ms 19 Jun 2023 170th ndren 932 60 20ms 2 Aug 2023 170th kg583 🇺🇸 932 60 54ms 14 Aug 2023 170th Just4FunCoder 932 60 19ms 17 Feb 2024 170th HumanoidCPU 932 60 23ms 6 May 2024 170th sean-niemann 🇺🇸 932 60 22ms 10 Jul 2024 170th pardouin 🇫🇷 932 60 18ms 11 Jul 2024 170th dokutan 932 60 19ms 15 Aug 2024 170th jatloe 932 60 19ms 26 Aug 2024 170th emgordon154 932 60 18ms 6 Sep 2024 170th starfihs 932 60 19ms 12 Oct 2024 170th CaedenHarper 🇨🇦 932 60 20ms 3 Nov 2024 170th 5quiwyrm 932 60 18ms 12 Nov 2024 170th plcc0 932 60 16ms 26 Mar 2025 170th yujh-yujh 🇬🇸 932 60 17ms 28 Mar 2025 170th albanian-laundromat 932 60 18ms 12 Apr 2025 170th Mukundan314 932 60 20ms 17 Apr 2025 170th fuzzylojik-golf 🇺🇸 932 60 19ms 1 Sep 2025 170th luuumine 🇫🇷 932 60 21ms 3 Nov 2025 170th Babafaba 932 60 18ms 7 Nov 2025 170th hellopir2 932 60 18ms 24 Nov 2025 201st canissimia 🇦🇶 931 51 1,286ms 6 May 2022 201st Lydxn 🇨🇦 931 51 1,303ms 6 May 2022 201st primo-ppcg 🇹🇭 931 51 1,204ms 6 May 2022 201st pardouin 🇫🇷 931 51 1,294ms 12 Apr 2025 205th grey0ut 929 48 2,052ms 8 Apr 2025 206th m-tkach 🇺🇦 929 91 57ms 5 May 2022 206th 09cf 929 91 61ms 4 Oct 2023 208th emplv 🇱🇻 927 60 11ms 5 May 2022 208th GrayJoKing 🇦🇺 927 60 10ms 6 May 2022 208th targrik 927 60 13ms 24 Dec 2024 208th xsot 🇸🇬 927 60 11ms 1 May 2025 212th Lydxn 🇨🇦 926 38 1,540ms 4 May 2022 212th GrayJoKing 🇦🇺 926 38 349ms 5 May 2022 212th Steffan153 🇫🇮 926 38 355ms 16 Dec 2022 212th ovs-code 🇩🇪 926 38 350ms 30 Dec 2023 216th GolfingSuccess 🇬🇷 926 49 38ms 12 Aug 2024 216th Shanethegamer 🇺🇸 926 49 39ms 12 Aug 2024 216th Steffan153 🇫🇮 926 49 39ms 12 Aug 2024 216th MeWhenI 🇻🇦 926 49 37ms 13 Aug 2024 216th DialFrost 🇸🇬 926 49 39ms 13 Aug 2024 216th GrayJoKing 🇦🇺 926 49 41ms 15 Aug 2024 216th btnlq 926 49 39ms 16 Aug 2024 216th emgordon154 926 49 41ms 19 Aug 2024 216th ovs-code 🇩🇪 926 49 39ms 19 Aug 2024 216th mousetail 🇳🇱 926 49 42ms 13 Sep 2024 216th lynn 926 49 40ms 20 Dec 2024 216th weeble 926 49 40ms 20 Dec 2024 216th sean-niemann 🇺🇸 926 49 40ms 11 Jan 2025 229th ovs-code 🇩🇪 926 52 440ms 16 Jan 2024 229th kg583 🇺🇸 926 52 409ms 24 Jan 2024 229th Shanethegamer 🇺🇸 926 52 417ms 24 Mar 2024 229th pardouin 🇫🇷 926 52 458ms 11 Jul 2024 229th Steffan153 🇫🇮 926 52 409ms 17 Aug 2024 229th sean-niemann 🇺🇸 926 52 475ms 24 Jan 2025 235th JayXon 🇺🇸 926 73 4ms 23 Dec 2025 236th MeWhenI 🇻🇦 925 68 89ms 23 Feb 2023 236th JayXon 🇺🇸 925 68 88ms 4 Mar 2025 238th Lydxn 🇨🇦 924 70 118ms 17 Oct 2022 238th JayXon 🇺🇸 924 70 125ms 17 Oct 2022 240th roavin 924 84 407ms 23 Jun 2022 First Prev 161–240 of 3,511 Next Last