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 Gray Code Decoder Gray Code Encoder 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 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 ArkScript 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 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 ArkScript 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 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 Gray Code Decoder Gray Code Encoder 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 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 801st ulucs 859 35 9ms 8 May 2022 801st bstrat 859 35 9ms 6 Jun 2024 801st wh3n3v3r 🇨🇿 859 35 8ms 18 Nov 2024 804th rucin93 🇵🇱 859 57 153ms 4 Aug 2024 804th dokutan 859 57 145ms 9 Aug 2024 806th dokutan 859 79 10ms 27 Apr 2024 806th SwordF-Official 🇺🇸 859 79 10ms 1 Feb 2026 808th MeWhenI 🇻🇦 859 81 8ms 23 May 2023 808th Shanethegamer 🇺🇸 859 81 18ms 19 Dec 2023 808th emgordon154 859 81 20ms 29 Jul 2025 811th MeWhenI 🇻🇦 859 145 1,417ms 28 Mar 2025 812th JRaspass 🇬🇧 858 41 409ms 4 May 2022 812th SirBogman 🇺🇸 858 41 274ms 4 May 2022 812th Natanaelel 🇸🇪 858 41 384ms 4 May 2022 815th 5quiwyrm 858 52 304ms 4 Sep 2022 815th MeWhenI 🇻🇦 858 52 265ms 28 Jan 2023 815th Feniske 🇫🇷 858 52 295ms 7 Nov 2023 815th dcgjb 858 52 279ms 29 Jan 2024 815th JPRuskin 🇬🇧 858 52 263ms 7 Apr 2025 815th IISResetMe 858 52 278ms 7 Apr 2025 815th Ripick 858 52 295ms 1 Jun 2025 815th madex 🇩🇪 858 52 277ms 23 days ago 823rd jared-hughes 858 72 2ms 6 Jul 2022 823rd Steffan153 🇫🇮 858 72 2ms 3 Jan 2023 823rd MeWhenI 🇻🇦 858 72 2ms 7 May 2023 823rd ListeriaM 858 72 2ms 22 Aug 2023 823rd larcherMTT 858 72 2ms 5 Oct 2024 823rd snyderek 🇺🇸 858 72 2ms 19 Feb 2025 823rd 5quiwyrm 858 72 2ms 29 Jun 2025 823rd TeodorDyakov 🇧🇬 858 72 3ms 8 Jul 2025 823rd xiaoyiming123 858 72 2ms 12 Jul 2025 832nd ovs-code 🇩🇪 857 83 57ms 1 Jul 2024 833rd 386asm 🇺🇸 857 86 40ms 9 Apr 2023 833rd DialFrost 🇸🇬 857 86 43ms 30 Dec 2025 835th Liibe 857 97 471ms 25 Sep 2025 835th Schmitt-Very-Cool 857 97 434ms 26 Sep 2025 837th frankgraziano 857 198 108ms 14 Oct 2025 838th typeswitch-dev 🇵🇹 856 75 4ms 22 Jul 2023 839th yeminghan2021 856 99 69ms 3 Feb 2025 840th nwellnhof 🇩🇪 856 111 308ms 4 May 2022 840th stefangimmillaro 856 111 341ms 26 Sep 2023 840th kkoenig 856 111 319ms 4 Jan 2024 843rd Frowny 855 38 40ms 5 May 2022 843rd stackofbears 855 38 42ms 14 Mar 2025 845th DialFrost 🇸🇬 855 50 234ms 24 Oct 2023 846th Shanethegamer 🇺🇸 855 70 104ms 12 Dec 2022 846th Alessandro-Balconi 🇮🇹 855 70 102ms 26 Dec 2022 846th snoozingnewt 🇨🇦 855 70 210ms 22 Nov 2025 849th aditsu 855 77 2,321ms 23 Nov 2025 850th henrydukepickle 855 97 125ms 8 Jul 2025 851st ovs-code 🇩🇪 855 161 1,719ms 14 Sep 2025 852nd eshilo-draper 853 91 358ms 4 Sep 2022 852nd ericlangedijk 🇸🇮 853 91 369ms 23 May 2023 852nd KatieLG 🇬🇧 853 91 377ms 30 Apr 2024 852nd Mikey-Beep 🇬🇧 853 91 365ms 3 Sep 2024 856th MeWhenI 🇻🇦 853 92 467ms 10 Oct 2022 856th Betuaredead 853 92 480ms 5 Jan 2023 856th Yax42 🇫🇷 853 92 459ms 4 Oct 2025 859th o0lit3 🇺🇸 852 54 7ms 22 Jun 2023 859th Natanaelel 🇸🇪 852 54 7ms 10 Feb 2025 861st Yewzir 🇧🇪 852 65 4ms 9 Oct 2023 861st MeWhenI 🇻🇦 852 65 4ms 10 Oct 2023 863rd Shanethegamer 🇺🇸 852 83 1,252ms 4 May 2022 864th mtirado1 850 74 91ms 24 Dec 2022 864th Betuaredead 850 74 95ms 6 Jan 2023 864th KatieLG 🇬🇧 850 74 86ms 15 Jan 2023 864th bwat2 850 74 88ms 31 Mar 2023 864th stackotter 850 74 90ms 29 May 2023 864th ovs-code 🇩🇪 850 74 85ms 17 Apr 2024 870th Shanethegamer 🇺🇸 850 99 25ms 27 Apr 2023 871st JayXon 🇺🇸 848 56 1,287ms 9 May 2022 872nd dokutan 848 82 21ms 1 Jul 2024 873rd shinh 847 52 42ms 29 Jun 2022 873rd MeWhenI 🇻🇦 847 52 67ms 25 Jul 2023 875th the-zammers 847 68 165ms 2 Oct 2023 876th lynn 847 96 29ms 11 Jul 2023 877th jared-hughes 847 100 62ms 20 Jul 2022 877th ZakkkkAttackkkk 🇵🇭 847 100 61ms 10 Aug 2022 877th Walter225 847 100 59ms 25 Jul 2023 880th MeWhenI 🇻🇦 846 26 160ms 25 Aug 2022 First Prev 801–880 of 3,648 Next Last