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 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 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 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 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 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 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 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 901st dokutan 843 93 428ms 27 Sep 2025 902nd krcs 🇵🇱 842 53 246ms 9 May 2022 902nd ryanlanegit 842 53 243ms 19 Jun 2022 902nd sisyphus-ppcg 🇦🇺 842 53 402ms 15 Aug 2022 905th SirBogman 🇺🇸 842 89 38ms 4 May 2022 906th error256 841 81 71ms 13 Sep 2024 907th CLOStrophobic 🇮🇹 841 89 42ms 14 Feb 2025 908th kmathis22 841 100 31ms 13 Nov 2025 909th raszpi 🇭🇺 840 77 98ms 1 Sep 2023 910th eshilo-draper 839 75 85ms 6 Sep 2022 910th kmathis22 839 75 80ms 5 Sep 2025 912th sean-niemann 🇺🇸 839 76 107ms 8 Oct 2024 913th emplv 🇱🇻 839 124 25ms 31 Oct 2022 914th Codsilla 🇨🇦 838 51 230ms 1 Jul 2022 915th frankgraziano 838 66 4ms 20 Apr 2025 916th Andriamanitra 🇫🇮 838 83 12ms 17 Apr 2023 916th Natanaelel 🇸🇪 838 83 12ms 8 Jul 2023 918th MeWhenI 🇻🇦 838 164 1,639ms 7 Nov 2025 919th ovs-code 🇩🇪 837 85 15ms 11 Dec 2023 920th Steffan153 🇫🇮 837 97 29ms 18 Jan 2023 921st CatsAreFluffy 837 101 54ms 18 Feb 2023 921st annaproxy 837 101 55ms 9 May 2023 921st wojtekmal 837 101 52ms 15 Nov 2023 921st HumanoidCPU 837 101 55ms 6 May 2024 921st eMGeeneer 837 101 379ms 27 Jun 2024 921st bac0id 837 101 54ms 29 Jun 2024 921st michaelmoynihan 837 101 399ms 3 Sep 2025 921st snoozingnewt 🇨🇦 837 101 382ms 6 Oct 2025 929th dokutan 836 88 39ms 9 Jun 2024 930th SirBogman 🇺🇸 835 36 14ms 5 May 2022 930th Natanaelel 🇸🇪 835 36 87ms 15 Jun 2022 930th Steffan153 🇫🇮 835 36 91ms 18 Jan 2023 930th codereport 🇨🇦 835 36 9ms 1 Jun 2024 930th GolfinK 835 36 9ms 21 Nov 2024 930th lifthrasiir 🇰🇷 835 36 10ms 1 Dec 2024 930th GolfingSuccess 🇬🇷 835 36 11ms 20 Mar 2025 937th scpchicken 🇵🇼 835 55 10ms 4 May 2022 937th SirBogman 🇺🇸 835 55 6ms 5 May 2022 937th Shanethegamer 🇺🇸 835 55 6ms 19 May 2023 937th DialFrost 🇸🇬 835 55 10ms 14 Feb 2025 941st inverseLorentz 🇦🇺 835 69 156ms 3 Jun 2024 941st Yewzir 🇧🇪 835 69 110ms 24 Dec 2024 941st CLOStrophobic 🇮🇹 835 69 170ms 28 May 2025 944th ChiefChippy2 834 56 40ms 4 May 2022 944th aksyristos 834 56 36ms 29 Jan 2023 944th anter69 🇭🇺 834 56 35ms 12 Feb 2024 944th 3dm4n 🇫🇮 834 56 37ms 11 Mar 2024 944th lgrandco 834 56 39ms 9 Oct 2024 944th tatzyr 🇯🇵 834 56 38ms 10 Dec 2024 944th D-MOVE 🇵🇭 834 56 36ms 3 days ago 951st moustave 834 67 23ms 7 Nov 2024 952nd Alex-x90 🇺🇸 834 74 2ms 4 Dec 2022 952nd undersquire 834 74 2ms 24 Jun 2023 952nd rdmsr 834 74 2ms 24 Jun 2023 952nd Bmrl7 834 74 2ms 9 Jul 2023 952nd Vinterion 834 74 4ms 6 Nov 2023 952nd namelessiw 834 74 2ms 28 Dec 2023 952nd Jonatan6 🇩🇰 834 74 2ms 15 Mar 2024 952nd Mandrzejy 🇵🇱 834 74 2ms 12 Apr 2024 952nd kaurakeksi 🇫🇮 834 74 2ms 29 Dec 2024 961st Shanethegamer 🇺🇸 834 82 141ms 15 May 2023 962nd p-vf 🇨🇭 834 93 311ms 24 Jun 2022 962nd Smetalo 834 93 315ms 25 Aug 2022 962nd malworthy 834 93 329ms 19 Aug 2024 965th Grrisly 834 114 287ms 25 Mar 2024 966th Natanaelel 🇸🇪 833 39 131ms 10 Feb 2025 967th Steffan153 🇫🇮 833 55 79ms 21 Dec 2022 968th Shanethegamer 🇺🇸 833 57 1,051ms 15 Dec 2022 968th anter69 🇭🇺 833 57 876ms 23 Feb 2023 968th stefangimmillaro 833 57 891ms 6 May 2023 971st elisherer 🇮🇱 833 64 10ms 5 Jun 2022 971st Ashikpaul 🇮🇳 833 64 10ms 29 Jul 2022 971st LukeBridges 🇬🇧 833 64 10ms 26 Oct 2022 971st florton 833 64 10ms 18 Jan 2023 971st DayDun 🇸🇪 833 64 9ms 24 Jan 2023 First Prev 901–975 of 3,489 Next Last