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 148th MeWhenI 🇻🇦 934 89 449ms 7 Nov 2025 148th ethanlally 934 89 380ms 10 Nov 2025 148th snoozingnewt 🇨🇦 934 89 384ms 23 Nov 2025 148th ScottHamper 934 89 467ms 30 Nov 2025 148th KasperKivimaeki 🇫🇮 934 89 444ms 30 Nov 2025 166th primo-ppcg 🇹🇭 933 58 4ms 13 Nov 2022 166th clockworknazo 933 58 5ms 15 Nov 2022 166th Lydxn 🇨🇦 933 58 5ms 7 Feb 2023 166th xsot 🇸🇬 933 58 5ms 28 Jun 2024 166th Salutations45 933 58 5ms 18 Dec 2024 166th canissimia 🇦🇶 933 58 5ms 12 Dec 2025 172nd ovs-code 🇩🇪 932 60 19ms 4 May 2022 172nd m-tkach 🇺🇦 932 60 18ms 4 May 2022 172nd btnlq 932 60 25ms 5 May 2022 172nd orthoplex 🇨🇽 932 60 24ms 9 Oct 2022 172nd FlorianCassayre 🇫🇷 932 60 19ms 7 Nov 2022 172nd SirBogman 🇺🇸 932 60 20ms 20 Nov 2022 172nd QuincyNash 🇺🇸 932 60 20ms 1 Dec 2022 172nd Steffan153 🇫🇮 932 60 19ms 19 Dec 2022 172nd SirFireball3521 932 60 17ms 26 Jan 2023 172nd Shanethegamer 🇺🇸 932 60 20ms 25 May 2023 172nd CornerMercury 🇬🇧 932 60 20ms 19 Jun 2023 172nd ndren 932 60 21ms 2 Aug 2023 172nd kg583 🇺🇸 932 60 48ms 14 Aug 2023 172nd Just4FunCoder 932 60 21ms 17 Feb 2024 172nd HumanoidCPU 932 60 20ms 6 May 2024 172nd sean-niemann 🇺🇸 932 60 19ms 10 Jul 2024 172nd pardouin 🇫🇷 932 60 17ms 11 Jul 2024 172nd dokutan 932 60 20ms 15 Aug 2024 172nd jatloe 932 60 20ms 26 Aug 2024 172nd emgordon154 932 60 20ms 6 Sep 2024 172nd starfihs 932 60 18ms 12 Oct 2024 172nd CaedenHarper 🇨🇦 932 60 20ms 3 Nov 2024 172nd 5quiwyrm 932 60 18ms 12 Nov 2024 172nd plcc0 932 60 16ms 26 Mar 2025 172nd yujh-yujh 🇬🇸 932 60 18ms 28 Mar 2025 172nd albanian-laundromat 932 60 19ms 12 Apr 2025 172nd Mukundan314 932 60 22ms 17 Apr 2025 172nd fuzzylojik-golf 🇺🇸 932 60 20ms 1 Sep 2025 172nd luuumine 🇫🇷 932 60 20ms 3 Nov 2025 172nd Babafaba 932 60 18ms 7 Nov 2025 172nd hellopir2 932 60 20ms 24 Nov 2025 203rd canissimia 🇦🇶 931 51 1,302ms 6 May 2022 203rd Lydxn 🇨🇦 931 51 1,280ms 6 May 2022 203rd primo-ppcg 🇹🇭 931 51 1,309ms 6 May 2022 203rd pardouin 🇫🇷 931 51 1,391ms 12 Apr 2025 207th JayXon 🇺🇸 930 73 4ms 23 Dec 2025 208th m-tkach 🇺🇦 930 91 62ms 5 May 2022 208th 09cf 930 91 62ms 4 Oct 2023 210th grey0ut 929 48 2,160ms 8 Apr 2025 211th ovs-code 🇩🇪 927 52 455ms 16 Jan 2024 211th kg583 🇺🇸 927 52 410ms 24 Jan 2024 211th Shanethegamer 🇺🇸 927 52 407ms 24 Mar 2024 211th pardouin 🇫🇷 927 52 408ms 11 Jul 2024 211th Steffan153 🇫🇮 927 52 401ms 17 Aug 2024 211th sean-niemann 🇺🇸 927 52 479ms 24 Jan 2025 217th emplv 🇱🇻 927 60 11ms 5 May 2022 217th GrayJoKing 🇦🇺 927 60 10ms 6 May 2022 217th targrik 927 60 9ms 24 Dec 2024 217th xsot 🇸🇬 927 60 11ms 1 May 2025 221st Lydxn 🇨🇦 926 38 1,544ms 4 May 2022 221st GrayJoKing 🇦🇺 926 38 373ms 5 May 2022 221st Steffan153 🇫🇮 926 38 368ms 16 Dec 2022 221st ovs-code 🇩🇪 926 38 371ms 30 Dec 2023 225th GolfingSuccess 🇬🇷 926 49 38ms 12 Aug 2024 225th Shanethegamer 🇺🇸 926 49 39ms 12 Aug 2024 225th Steffan153 🇫🇮 926 49 39ms 12 Aug 2024 225th MeWhenI 🇻🇦 926 49 37ms 13 Aug 2024 225th DialFrost 🇸🇬 926 49 38ms 13 Aug 2024 225th GrayJoKing 🇦🇺 926 49 41ms 15 Aug 2024 225th btnlq 926 49 39ms 16 Aug 2024 225th emgordon154 926 49 41ms 19 Aug 2024 225th ovs-code 🇩🇪 926 49 39ms 19 Aug 2024 225th mousetail 🇳🇱 926 49 39ms 13 Sep 2024 225th lynn 926 49 39ms 20 Dec 2024 225th weeble 926 49 40ms 20 Dec 2024 225th sean-niemann 🇺🇸 926 49 39ms 11 Jan 2025 238th MeWhenI 🇻🇦 925 68 91ms 23 Feb 2023 238th JayXon 🇺🇸 925 68 94ms 4 Mar 2025 240th JayXon 🇺🇸 924 53 265ms 19 days ago First Prev 161–240 of 3,602 Next Last