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 749th HumanoidCPU 861 73 77ms 7 May 2024 752nd Steffan153 🇫🇮 861 78 80ms 4 Feb 2023 753rd GrayJoKing 🇦🇺 860 56 411ms 15 Jan 2024 753rd AlephSquirrel 860 56 426ms 21 Jan 2024 755th Setvizan 860 62 10ms 12 Jan 2023 755th GreenBeansAgainstVeganism 860 62 10ms 13 Jan 2023 755th arctouch-cristiannevianna 860 62 10ms 3 Apr 2023 755th Corxldyphik 860 62 10ms 11 Apr 2023 755th Blockyheadman 860 62 10ms 1 Nov 2023 755th ollyspooner 860 62 10ms 22 Nov 2023 755th itserasmus 860 62 10ms 25 Jan 2024 755th Jacob385 860 62 10ms 13 Mar 2024 755th junkondo-jp 860 62 11ms 30 Jun 2024 755th ShiraJoseph 🇺🇸 860 62 9ms 1 Mar 2025 755th tomh1012 860 62 9ms 9 days ago 766th yzhs 🇩🇪 860 65 19ms 16 Jun 2022 766th rollershutter 860 65 20ms 9 Sep 2022 766th bac0id 860 65 20ms 26 Sep 2023 766th robin-scragg 860 65 23ms 8 Jun 2025 766th RaBa21 🇭🇺 860 65 29ms 11 Jul 2025 766th TransformLikeATensor 860 65 20ms 17 Oct 2025 772nd Andriamanitra 🇫🇮 860 67 144ms 26 Apr 2023 773rd Shanethegamer 🇺🇸 860 97 100ms 15 Apr 2025 773rd GolfingSuccess 🇬🇷 860 97 111ms 14 days ago 773rd DialFrost 🇸🇬 860 97 94ms 10 days ago 776th MeWhenI 🇻🇦 859 81 8ms 23 May 2023 777th MeWhenI 🇻🇦 859 145 526ms 28 Mar 2025 778th ulucs 858 35 9ms 8 May 2022 778th bstrat 858 35 9ms 6 Jun 2024 778th wh3n3v3r 🇨🇿 858 35 8ms 18 Nov 2024 781st JRaspass 🇬🇧 858 41 358ms 4 May 2022 781st SirBogman 🇺🇸 858 41 300ms 4 May 2022 781st Natanaelel 🇸🇪 858 41 365ms 4 May 2022 784th 5quiwyrm 858 52 300ms 4 Sep 2022 784th MeWhenI 🇻🇦 858 52 280ms 28 Jan 2023 784th Feniske 🇫🇷 858 52 280ms 7 Nov 2023 784th dcgjb 858 52 297ms 29 Jan 2024 784th JPRuskin 🇬🇧 858 52 313ms 7 Apr 2025 784th IISResetMe 858 52 267ms 7 Apr 2025 784th Ripick 858 52 266ms 1 Jun 2025 791st Yewzir 🇧🇪 858 160 2,399ms 14 Nov 2025 792nd jared-hughes 857 72 2ms 6 Jul 2022 792nd Steffan153 🇫🇮 857 72 2ms 3 Jan 2023 792nd MeWhenI 🇻🇦 857 72 3ms 7 May 2023 792nd ListeriaM 857 72 2ms 22 Aug 2023 792nd larcherMTT 857 72 2ms 5 Oct 2024 792nd snyderek 🇺🇸 857 72 3ms 19 Feb 2025 792nd 5quiwyrm 857 72 2ms 29 Jun 2025 792nd TeodorDyakov 🇧🇬 857 72 3ms 8 Jul 2025 792nd xiaoyiming123 857 72 2ms 12 Jul 2025 801st typeswitch-dev 🇵🇹 856 75 4ms 22 Jul 2023 802nd ovs-code 🇩🇪 856 83 54ms 1 Jul 2024 803rd Liibe 856 97 391ms 25 Sep 2025 803rd Schmitt-Very-Cool 856 97 435ms 26 Sep 2025 805th nwellnhof 🇩🇪 856 111 271ms 4 May 2022 805th stefangimmillaro 856 111 268ms 26 Sep 2023 805th kkoenig 856 111 287ms 4 Jan 2024 808th frankgraziano 856 198 113ms 14 Oct 2025 809th Frowny 855 38 40ms 5 May 2022 809th stackofbears 855 38 42ms 14 Mar 2025 811th 386asm 🇺🇸 855 86 40ms 9 Apr 2023 812th DialFrost 🇸🇬 854 50 237ms 24 Oct 2023 813th MeWhenI 🇻🇦 854 71 106ms 13 Dec 2022 814th henrydukepickle 854 97 118ms 8 Jul 2025 815th yeminghan2021 854 99 51ms 3 Feb 2025 816th aditsu 853 77 2,554ms 18 days ago 817th eshilo-draper 853 91 365ms 4 Sep 2022 817th ericlangedijk 🇸🇮 853 91 389ms 23 May 2023 817th KatieLG 🇬🇧 853 91 382ms 30 Apr 2024 817th Mikey-Beep 🇬🇧 853 91 341ms 3 Sep 2024 821st ovs-code 🇩🇪 853 161 1,719ms 14 Sep 2025 822nd frosster 852 76 7ms 12 May 2023 822nd kyleclaassen 852 76 7ms 20 May 2023 822nd NickTheEASDude 🇺🇸 852 76 6ms 7 May 2024 822nd koipondx86 852 76 7ms 8 Nov 2024 First Prev 751–825 of 3,492 Next Last