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 799th wh3n3v3r 🇨🇿 859 35 8ms 18 Nov 2024 802nd rucin93 🇵🇱 859 57 150ms 4 Aug 2024 802nd dokutan 859 57 157ms 9 Aug 2024 804th dokutan 859 79 10ms 27 Apr 2024 804th SwordF-Official 🇺🇸 859 79 10ms 1 Feb 2026 806th MeWhenI 🇻🇦 859 81 8ms 23 May 2023 806th Shanethegamer 🇺🇸 859 81 18ms 19 Dec 2023 806th emgordon154 859 81 20ms 29 Jul 2025 809th MeWhenI 🇻🇦 859 145 1,417ms 28 Mar 2025 810th JRaspass 🇬🇧 858 41 409ms 4 May 2022 810th SirBogman 🇺🇸 858 41 274ms 4 May 2022 810th Natanaelel 🇸🇪 858 41 384ms 4 May 2022 813th 5quiwyrm 858 52 304ms 4 Sep 2022 813th MeWhenI 🇻🇦 858 52 318ms 28 Jan 2023 813th Feniske 🇫🇷 858 52 317ms 7 Nov 2023 813th dcgjb 858 52 279ms 29 Jan 2024 813th JPRuskin 🇬🇧 858 52 314ms 7 Apr 2025 813th IISResetMe 858 52 325ms 7 Apr 2025 813th Ripick 858 52 315ms 1 Jun 2025 813th madex 🇩🇪 858 52 363ms 20 days ago 821st jared-hughes 858 72 2ms 6 Jul 2022 821st Steffan153 🇫🇮 858 72 2ms 3 Jan 2023 821st MeWhenI 🇻🇦 858 72 2ms 7 May 2023 821st ListeriaM 858 72 2ms 22 Aug 2023 821st larcherMTT 858 72 2ms 5 Oct 2024 821st snyderek 🇺🇸 858 72 2ms 19 Feb 2025 821st 5quiwyrm 858 72 2ms 29 Jun 2025 821st TeodorDyakov 🇧🇬 858 72 3ms 8 Jul 2025 821st xiaoyiming123 858 72 2ms 12 Jul 2025 830th ovs-code 🇩🇪 857 83 57ms 1 Jul 2024 831st 386asm 🇺🇸 857 86 40ms 9 Apr 2023 831st DialFrost 🇸🇬 857 86 43ms 30 Dec 2025 833rd Liibe 857 97 477ms 25 Sep 2025 833rd Schmitt-Very-Cool 857 97 434ms 26 Sep 2025 835th frankgraziano 857 198 108ms 14 Oct 2025 836th typeswitch-dev 🇵🇹 856 75 5ms 22 Jul 2023 837th nwellnhof 🇩🇪 856 111 301ms 4 May 2022 837th stefangimmillaro 856 111 310ms 26 Sep 2023 837th kkoenig 856 111 290ms 4 Jan 2024 840th Frowny 855 38 40ms 5 May 2022 840th stackofbears 855 38 42ms 14 Mar 2025 842nd DialFrost 🇸🇬 855 50 266ms 24 Oct 2023 843rd Shanethegamer 🇺🇸 855 70 104ms 12 Dec 2022 843rd Alessandro-Balconi 🇮🇹 855 70 103ms 26 Dec 2022 843rd snoozingnewt 🇨🇦 855 70 210ms 22 Nov 2025 846th aditsu 855 77 2,321ms 23 Nov 2025 847th henrydukepickle 855 97 125ms 8 Jul 2025 848th yeminghan2021 855 99 57ms 3 Feb 2025 849th ovs-code 🇩🇪 855 161 1,719ms 14 Sep 2025 850th eshilo-draper 853 91 358ms 4 Sep 2022 850th ericlangedijk 🇸🇮 853 91 369ms 23 May 2023 850th KatieLG 🇬🇧 853 91 377ms 30 Apr 2024 850th Mikey-Beep 🇬🇧 853 91 365ms 3 Sep 2024 854th MeWhenI 🇻🇦 853 92 467ms 10 Oct 2022 854th Betuaredead 853 92 480ms 5 Jan 2023 854th Yax42 🇫🇷 853 92 470ms 4 Oct 2025 857th o0lit3 🇺🇸 852 54 7ms 22 Jun 2023 857th Natanaelel 🇸🇪 852 54 7ms 10 Feb 2025 859th Yewzir 🇧🇪 852 65 4ms 9 Oct 2023 859th MeWhenI 🇻🇦 852 65 4ms 10 Oct 2023 861st Shanethegamer 🇺🇸 852 83 1,252ms 4 May 2022 862nd mtirado1 850 74 91ms 24 Dec 2022 862nd Betuaredead 850 74 95ms 6 Jan 2023 862nd KatieLG 🇬🇧 850 74 91ms 15 Jan 2023 862nd bwat2 850 74 88ms 31 Mar 2023 862nd stackotter 850 74 90ms 29 May 2023 862nd ovs-code 🇩🇪 850 74 85ms 17 Apr 2024 868th Shanethegamer 🇺🇸 850 99 24ms 27 Apr 2023 869th JayXon 🇺🇸 848 56 1,287ms 9 May 2022 870th dokutan 848 82 21ms 1 Jul 2024 871st shinh 847 52 43ms 29 Jun 2022 871st MeWhenI 🇻🇦 847 52 67ms 25 Jul 2023 873rd the-zammers 847 68 165ms 2 Oct 2023 874th lynn 847 96 29ms 11 Jul 2023 875th jared-hughes 847 100 58ms 20 Jul 2022 875th ZakkkkAttackkkk 🇵🇭 847 100 61ms 10 Aug 2022 875th Walter225 847 100 62ms 25 Jul 2023 878th MeWhenI 🇻🇦 846 26 160ms 25 Aug 2022 878th AlephSquirrel 846 26 157ms 6 Jan 2023 878th ovs-code 🇩🇪 846 26 367ms 5 May 2024 First Prev 801–880 of 3,642 Next Last