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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 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 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 Calendar 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 Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Tower of Hanoi 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 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 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 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 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 Calendar 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 Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Tower of Hanoi Turtle Tutorial # Golfer Points Chars Time Submitted 900th emgordon154 842 115 255ms 17 Jan 2025 902nd error256 841 81 75ms 13 Sep 2024 903rd CLOStrophobic 🇮🇹 841 89 40ms 14 Feb 2025 904th kmathis22 841 100 29ms 17 days ago 905th raszpi 🇭🇺 840 77 105ms 1 Sep 2023 906th eshilo-draper 839 75 82ms 6 Sep 2022 906th kmathis22 839 75 78ms 5 Sep 2025 908th sean-niemann 🇺🇸 839 76 107ms 8 Oct 2024 909th Codsilla 🇨🇦 838 51 258ms 1 Jul 2022 910th frankgraziano 838 66 4ms 20 Apr 2025 911th Andriamanitra 🇫🇮 838 83 12ms 17 Apr 2023 911th Natanaelel 🇸🇪 838 83 11ms 8 Jul 2023 913th emplv 🇱🇻 838 124 27ms 31 Oct 2022 914th MeWhenI 🇻🇦 838 164 1,609ms 22 days ago 915th ovs-code 🇩🇪 837 85 15ms 11 Dec 2023 916th Steffan153 🇫🇮 837 97 33ms 18 Jan 2023 917th CatsAreFluffy 837 101 57ms 18 Feb 2023 917th annaproxy 837 101 54ms 9 May 2023 917th wojtekmal 837 101 53ms 15 Nov 2023 917th HumanoidCPU 837 101 51ms 6 May 2024 917th eMGeeneer 837 101 363ms 27 Jun 2024 917th bac0id 837 101 51ms 29 Jun 2024 917th michaelmoynihan 837 101 387ms 3 Sep 2025 917th snoozingnewt 🇺🇸 837 101 371ms 6 Oct 2025 925th dokutan 836 88 49ms 9 Jun 2024 926th SirBogman 🇺🇸 835 36 9ms 5 May 2022 926th Natanaelel 🇸🇪 835 36 90ms 15 Jun 2022 926th Steffan153 🇫🇮 835 36 91ms 18 Jan 2023 926th codereport 🇨🇦 835 36 8ms 1 Jun 2024 926th GolfinK 835 36 9ms 21 Nov 2024 926th lifthrasiir 🇰🇷 835 36 8ms 1 Dec 2024 926th GolfingSuccess 🇬🇷 835 36 10ms 20 Mar 2025 933rd scpchicken 🇵🇼 835 55 11ms 4 May 2022 933rd SirBogman 🇺🇸 835 55 8ms 5 May 2022 933rd Shanethegamer 🇺🇸 835 55 6ms 19 May 2023 933rd DialFrost 🇸🇬 835 55 11ms 14 Feb 2025 937th inverseLorentz 🇦🇺 835 69 176ms 3 Jun 2024 937th Yewzir 🇧🇪 835 69 110ms 24 Dec 2024 937th CLOStrophobic 🇮🇹 835 69 174ms 28 May 2025 940th Re-Adventures 🇮🇳 835 116 260ms 16 Jul 2023 940th Yewzir 🇧🇪 835 116 256ms 7 Feb 2024 942nd ChiefChippy2 834 56 39ms 4 May 2022 942nd aksyristos 834 56 41ms 29 Jan 2023 942nd anter69 🇭🇺 834 56 39ms 12 Feb 2024 942nd 3dm4n 🇫🇮 834 56 52ms 11 Mar 2024 942nd lgrandco 834 56 41ms 9 Oct 2024 942nd tatzyr 🇯🇵 834 56 40ms 10 Dec 2024 948th moustave 834 67 22ms 7 Nov 2024 949th Alex-x90 🇺🇸 834 74 2ms 4 Dec 2022 949th undersquire 834 74 3ms 24 Jun 2023 949th rdmsr 834 74 2ms 24 Jun 2023 949th Bmrl7 834 74 3ms 9 Jul 2023 949th Vinterion 834 74 3ms 6 Nov 2023 949th namelessiw 834 74 3ms 28 Dec 2023 949th Jonatan6 🇩🇰 834 74 3ms 15 Mar 2024 949th Mandrzejy 🇵🇱 834 74 5ms 12 Apr 2024 949th kaurakeksi 🇫🇮 834 74 3ms 29 Dec 2024 958th Shanethegamer 🇺🇸 834 82 155ms 15 May 2023 959th p-vf 🇨🇭 834 93 317ms 24 Jun 2022 959th Smetalo 834 93 315ms 25 Aug 2022 959th malworthy 834 93 329ms 19 Aug 2024 962nd Natanaelel 🇸🇪 833 39 196ms 10 Feb 2025 963rd Steffan153 🇫🇮 833 55 78ms 21 Dec 2022 964th Shanethegamer 🇺🇸 833 57 1,051ms 15 Dec 2022 964th anter69 🇭🇺 833 57 876ms 23 Feb 2023 964th stefangimmillaro 833 57 891ms 6 May 2023 967th elisherer 🇮🇱 833 64 9ms 5 Jun 2022 967th Ashikpaul 🇮🇳 833 64 12ms 29 Jul 2022 967th LukeBridges 🇬🇧 833 64 10ms 26 Oct 2022 967th florton 833 64 10ms 18 Jan 2023 967th DayDun 🇸🇪 833 64 10ms 24 Jan 2023 967th lyphyser 833 64 11ms 3 Jun 2023 967th Davr1 🇨🇿 833 64 10ms 14 Oct 2023 967th stellartux 833 64 11ms 26 Dec 2023 967th goodwyna21 833 64 11ms 12 Nov 2024 First Prev 901–975 of 3,469 Next Last