Collatz in all languages in bytes. Cheevos Holes Recent Holes Langs Medals Misc 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 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 Calendar Connect Four CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Turtle Tutorial All Languages ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir 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 Erlang 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 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 Erlang 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 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 Calendar Connect Four CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 451st Lydxn 🇨🇦 914 81 45ms 1 Apr 2023 452nd AdamHe17 913 73 20ms 31 May 2022 452nd AliceFord 913 73 26ms 2 Jun 2022 452nd Natanaelel 🇸🇪 913 73 23ms 16 Jun 2022 452nd btjones0 913 73 25ms 21 Jun 2022 452nd marcin7Cd 913 73 22ms 27 Jun 2022 452nd tri1212 🇻🇳 913 73 21ms 18 Jul 2022 452nd vhoulbreque 🇫🇷 913 73 20ms 18 Aug 2022 452nd KatieLG 🇬🇧 913 73 20ms 29 Aug 2022 452nd tkr-sh 🇫🇷 913 73 25ms 8 Sep 2022 452nd jroscoe5 913 73 22ms 15 Sep 2022 452nd fredrik-bakke 🇳🇴 913 73 21ms 18 Sep 2022 452nd firegene 🇮🇪 913 73 23ms 27 Sep 2022 452nd OhmNomNom 913 73 24ms 7 Oct 2022 452nd 0-4849 913 73 21ms 1 Nov 2022 452nd M0PKOBKA 913 73 30ms 19 Dec 2022 452nd calumacutt 913 73 24ms 19 Dec 2022 452nd thehylian 913 73 21ms 2 Jan 2023 452nd fynnkroeger 913 73 28ms 6 Jan 2023 452nd shellbertt 🇨🇦 913 73 21ms 13 Jan 2023 452nd hunt-g 913 73 22ms 4 Feb 2023 452nd ljweel 913 73 20ms 13 Feb 2023 452nd jmerle 🇳🇱 913 73 21ms 16 Feb 2023 452nd TaserTheFox 🇺🇸 913 73 22ms 14 Mar 2023 452nd pinguicula 913 73 19ms 6 Apr 2023 452nd TheoKeller1 913 73 28ms 11 Jun 2023 452nd fkantelberg 913 73 23ms 16 Jul 2023 452nd Mikey-Beep 🇬🇧 913 73 21ms 31 Aug 2023 452nd eiburns 913 73 24ms 9 Oct 2023 452nd htareque 913 73 23ms 13 Oct 2023 452nd wearsunscreen 913 73 20ms 18 Oct 2023 452nd bzijlema 🇳🇱 913 73 21ms 25 Oct 2023 452nd Grrisly 913 73 20ms 10 Nov 2023 452nd m42km 913 73 25ms 11 Nov 2023 452nd GeneralPoxter 913 73 24ms 7 Dec 2023 452nd logvp 913 73 23ms 12 Jan 2024 452nd JoaoFelipe3 913 73 24ms 13 Jan 2024 452nd ehulinsky 🇺🇸 913 73 27ms 16 Feb 2024 452nd Lewenhaupt 913 73 20ms 23 Feb 2024 452nd Yewzir 🇧🇪 913 73 20ms 5 Apr 2024 452nd stertooy 🇧🇪 913 73 20ms 9 Jun 2024 452nd cuboids 913 73 21ms 11 Jul 2024 452nd jipsong 🇩🇪 913 73 22ms 23 Jul 2024 452nd mattyhempstead 913 73 21ms 6 Oct 2024 452nd wh3n3v3r 🇨🇿 913 73 28ms 18 Nov 2024 452nd klixel 🇨🇦 913 73 20ms 18 Nov 2024 452nd tjwrenn 913 73 22ms 10 Dec 2024 452nd nullie 913 73 24ms 19 Dec 2024 452nd ryyyn 🇺🇸 913 73 28ms 7 Jan 2025 452nd maxgodfrey2004 🇨🇦 913 73 33ms 13 Feb 2025 452nd lolgeny 913 73 21ms 22 Feb 2025 452nd andrewjc2000 913 73 33ms 23 Feb 2025 452nd Languag3 913 73 21ms 27 Feb 2025 452nd Bulmenisaurus 913 73 24ms 2 Mar 2025 452nd souta-1326 913 73 20ms 1 Apr 2025 452nd BenjaminHGong 913 73 22ms 26 May 2025 452nd FEZfan 🇦🇺 913 73 20ms 11 Jul 2025 452nd wuduculfre 913 73 23ms 28 Jul 2025 452nd BREMAUCY 🇫🇷 913 73 24ms 24 Aug 2025 452nd FortuiteMan 🇫🇷 913 73 22ms 24 days ago 452nd miaoaixuan 913 73 23ms 22 days ago 512th andersk 🇺🇸 913 91 137ms 25 Oct 2022 512th Super-Pizza 🇨🇦 913 91 126ms 4 Dec 2022 512th klixel 🇨🇦 913 91 119ms 20 May 2023 512th lynn 913 91 141ms 6 Jul 2024 512th edsrzf 🇳🇿 913 91 120ms 29 Nov 2024 512th DialFrost 🇸🇬 913 91 129ms 7 Apr 2025 518th lynn 912 78 1,390ms 5 May 2022 519th nai62 911 69 7ms 27 Aug 2022 520th GrayJoKing 🇦🇺 911 71 289ms 10 Aug 2023 521st tailorspy 911 93 71ms 27 May 2024 521st sean-niemann 🇺🇸 911 93 65ms 9 Jun 2025 523rd GolfingSuccess 🇬🇷 910 64 91ms 14 Dec 2024 523rd MeWhenI 🇻🇦 910 64 83ms 24 Dec 2024 525th MeWhenI 🇻🇦 909 63 256ms 5 May 2022 First Prev 451–525 of 3,408 Next Last
Lydxn
🇨🇦
AdamHe17
AliceFord
Natanaelel
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btjones0
marcin7Cd
tri1212
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vhoulbreque
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KatieLG
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tkr-sh
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jroscoe5
fredrik-bakke
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firegene
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OhmNomNom
0-4849
M0PKOBKA
calumacutt
thehylian
fynnkroeger
shellbertt
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hunt-g
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jmerle
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TaserTheFox
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Grrisly
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Lewenhaupt
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Languag3
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BenjaminHGong
FEZfan
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BREMAUCY
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FortuiteMan
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andersk
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MeWhenI
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