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 NFA Simulator 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 NFA Simulator 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 krcs 🇵🇱 842 53 246ms 9 May 2022 901st ryanlanegit 842 53 243ms 19 Jun 2022 901st sisyphus-ppcg 🇦🇺 842 53 402ms 15 Aug 2022 904th DialFrost 🇸🇬 842 66 79ms 7 Apr 2025 905th SirBogman 🇺🇸 842 89 51ms 4 May 2022 906th KatieLG 🇬🇧 842 115 289ms 25 Sep 2022 906th emgordon154 842 115 278ms 17 Jan 2025 908th error256 841 81 75ms 13 Sep 2024 909th CLOStrophobic 🇮🇹 841 89 40ms 14 Feb 2025 910th kmathis22 841 100 29ms 20 days ago 911th raszpi 🇭🇺 840 77 105ms 1 Sep 2023 912th eshilo-draper 839 75 82ms 6 Sep 2022 912th kmathis22 839 75 78ms 5 Sep 2025 914th sean-niemann 🇺🇸 839 76 107ms 8 Oct 2024 915th emplv 🇱🇻 839 124 27ms 31 Oct 2022 916th Codsilla 🇨🇦 838 51 258ms 1 Jul 2022 917th frankgraziano 838 66 4ms 20 Apr 2025 918th Andriamanitra 🇫🇮 838 83 12ms 17 Apr 2023 918th Natanaelel 🇸🇪 838 83 11ms 8 Jul 2023 920th MeWhenI 🇻🇦 838 164 1,609ms 26 days ago 921st ovs-code 🇩🇪 837 85 15ms 11 Dec 2023 922nd Steffan153 🇫🇮 837 97 33ms 18 Jan 2023 923rd CatsAreFluffy 837 101 57ms 18 Feb 2023 923rd annaproxy 837 101 54ms 9 May 2023 923rd wojtekmal 837 101 53ms 15 Nov 2023 923rd HumanoidCPU 837 101 51ms 6 May 2024 923rd eMGeeneer 837 101 363ms 27 Jun 2024 923rd bac0id 837 101 51ms 29 Jun 2024 923rd michaelmoynihan 837 101 387ms 3 Sep 2025 923rd snoozingnewt 🇨🇦 837 101 371ms 6 Oct 2025 931st dokutan 836 88 49ms 9 Jun 2024 932nd SirBogman 🇺🇸 835 36 9ms 5 May 2022 932nd Natanaelel 🇸🇪 835 36 90ms 15 Jun 2022 932nd Steffan153 🇫🇮 835 36 91ms 18 Jan 2023 932nd codereport 🇨🇦 835 36 8ms 1 Jun 2024 932nd GolfinK 835 36 9ms 21 Nov 2024 932nd lifthrasiir 🇰🇷 835 36 8ms 1 Dec 2024 932nd GolfingSuccess 🇬🇷 835 36 10ms 20 Mar 2025 939th scpchicken 🇵🇼 835 55 11ms 4 May 2022 939th SirBogman 🇺🇸 835 55 8ms 5 May 2022 939th Shanethegamer 🇺🇸 835 55 6ms 19 May 2023 939th DialFrost 🇸🇬 835 55 11ms 14 Feb 2025 943rd inverseLorentz 🇦🇺 835 69 176ms 3 Jun 2024 943rd Yewzir 🇧🇪 835 69 110ms 24 Dec 2024 943rd CLOStrophobic 🇮🇹 835 69 174ms 28 May 2025 946th Re-Adventures 🇮🇳 835 116 261ms 16 Jul 2023 946th Yewzir 🇧🇪 835 116 260ms 7 Feb 2024 948th ChiefChippy2 834 56 39ms 4 May 2022 948th aksyristos 834 56 41ms 29 Jan 2023 948th anter69 🇭🇺 834 56 39ms 12 Feb 2024 948th 3dm4n 🇫🇮 834 56 52ms 11 Mar 2024 948th lgrandco 834 56 41ms 9 Oct 2024 948th tatzyr 🇯🇵 834 56 40ms 10 Dec 2024 954th moustave 834 67 22ms 7 Nov 2024 955th Alex-x90 🇺🇸 834 74 2ms 4 Dec 2022 955th undersquire 834 74 3ms 24 Jun 2023 955th rdmsr 834 74 2ms 24 Jun 2023 955th Bmrl7 834 74 3ms 9 Jul 2023 955th Vinterion 834 74 3ms 6 Nov 2023 955th namelessiw 834 74 3ms 28 Dec 2023 955th Jonatan6 🇩🇰 834 74 3ms 15 Mar 2024 955th Mandrzejy 🇵🇱 834 74 5ms 12 Apr 2024 955th kaurakeksi 🇫🇮 834 74 3ms 29 Dec 2024 964th Shanethegamer 🇺🇸 834 82 155ms 15 May 2023 965th p-vf 🇨🇭 834 93 317ms 24 Jun 2022 965th Smetalo 834 93 315ms 25 Aug 2022 965th malworthy 834 93 329ms 19 Aug 2024 968th Natanaelel 🇸🇪 833 39 196ms 10 Feb 2025 969th Steffan153 🇫🇮 833 55 78ms 21 Dec 2022 970th Shanethegamer 🇺🇸 833 57 1,051ms 15 Dec 2022 970th anter69 🇭🇺 833 57 876ms 23 Feb 2023 970th stefangimmillaro 833 57 891ms 6 May 2023 973rd elisherer 🇮🇱 833 64 9ms 5 Jun 2022 973rd Ashikpaul 🇮🇳 833 64 12ms 29 Jul 2022 973rd LukeBridges 🇬🇧 833 64 10ms 26 Oct 2022 First Prev 901–975 of 3,484 Next Last