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Collatz in all languages in bytes. 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 Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions 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 Gray Code Decoder Gray Code Encoder 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 Multitap Input 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 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Dragon Curve Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers Huffman Encoder NFA Simulator Nim Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> ALGOL 68 ArkScript 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 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> ALGOL 68 ArkScript 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 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily 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 Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions 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 Gray Code Decoder Gray Code Encoder 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 Multitap Input 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 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Dragon Curve Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers Huffman Encoder NFA Simulator Nim Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 488th davecame 896 69 24ms 20 Aug 2024 488th zacjl 896 69 18ms 19 Sep 2024 488th starfihs 896 69 17ms 12 Oct 2024 488th kops-cg 896 69 24ms 9 Feb 2025 488th sean-niemann 🇺🇸 896 69 18ms 7 Mar 2025 488th plcc0 896 69 16ms 26 Mar 2025 488th yujh-yujh 🇬🇸 896 69 24ms 28 Mar 2025 488th moustave 896 69 17ms 10 Jun 2025 488th 4atj 896 69 3,516ms 30 Jun 2025 488th dirckvdende 896 69 17ms 11 Jul 2025 488th xnor-gate 896 69 17ms 19 Aug 2025 488th BrunoVisnadi 🇧🇷 896 69 23ms 1 Oct 2025 488th Mukundan314 896 69 18ms 13 Nov 2025 488th bizy-coder 896 69 16ms 21 Nov 2025 488th duckyluuk 🇳🇱 896 69 19ms 4 Dec 2025 488th bricknellj 896 69 17ms 4 Dec 2025 488th Seek64 🇩🇪 896 69 17ms 26 Dec 2025 488th CaedenHarper 🇨🇦 896 69 17ms 14 days ago 488th vang1ong7ang 🇦🇶 896 69 16ms 3 days ago 520th JayXon 🇺🇸 896 74 2,567ms 5 days ago 521st error256 896 81 18ms 19 Mar 2026 522nd MichalMarsalek 🇨🇿 896 87 443ms 5 May 2022 522nd Kloppermand 🇩🇰 896 87 436ms 7 Oct 2022 522nd bwat2 896 87 464ms 6 Apr 2023 522nd bpharaldsson 896 87 397ms 9 Feb 2026 526th oeb25 895 93 129ms 16 May 2022 526th snobee 🇨🇦 895 93 130ms 8 Dec 2022 526th logvp 895 93 127ms 2 Jan 2024 526th smartiel 895 93 128ms 12 Aug 2024 526th trist224 🇫🇷 895 93 125ms 12 Aug 2024 526th nullie 895 93 134ms 19 Dec 2024 526th lolgeny 895 93 135ms 22 Feb 2025 533rd Shanethegamer 🇺🇸 894 61 4ms 31 Oct 2022 533rd MeWhenI 🇻🇦 894 61 4ms 4 Nov 2022 535th Yewzir 🇧🇪 894 72 134ms 20 Nov 2025 536th GolfingSuccess 🇬🇷 894 95 61ms 5 May 2022 536th Alex-x90 🇺🇸 894 95 64ms 4 Dec 2022 536th Mandrzejy 🇵🇱 894 95 59ms 22 Mar 2024 536th roupiq 🇵🇱 894 95 61ms 9 days ago 540th Steffan153 🇫🇮 893 52 7ms 31 Dec 2022 540th blaztoma 🇱🇹 893 52 8ms 18 Jan 2026 542nd canissimia 🇦🇶 893 110 3,055ms 20 Feb 2023 543rd jared-hughes 893 130 22ms 15 Dec 2024 544th KatieLG 🇬🇧 892 60 11ms 4 May 2022 544th ScottHamper 892 60 13ms 5 May 2022 544th Re-Adventures 🇮🇳 892 60 13ms 5 May 2022 544th 0x24a537r9 892 60 13ms 29 Jul 2022 544th stefangabos 🇷🇴 892 60 12ms 19 Aug 2022 544th eranws 892 60 11ms 10 Sep 2022 544th GeorgeStechman 🇬🇧 892 60 12ms 26 Sep 2022 544th BloodStormKnight 892 60 15ms 15 Oct 2022 544th dzshn 892 60 14ms 3 Dec 2022 544th biocommando 🇫🇮 892 60 14ms 20 Dec 2022 544th Betuaredead 892 60 12ms 5 Jan 2023 544th piano-miles 892 60 10ms 16 Jan 2023 544th Yewzir 🇧🇪 892 60 12ms 12 Feb 2023 544th shellbertt 🇨🇦 892 60 12ms 26 Feb 2023 544th zakariamouhid 892 60 12ms 20 May 2023 544th raphaelimahorn 892 60 11ms 23 Aug 2023 544th jbt 892 60 11ms 25 Dec 2023 544th olleicua 🇺🇸 892 60 12ms 15 Feb 2024 544th HumanoidCPU 892 60 14ms 3 May 2024 544th dokutan 892 60 11ms 13 Aug 2024 544th LostSyntax21 🇬🇧 892 60 12ms 10 Sep 2024 544th xyangst 892 60 14ms 28 Sep 2024 544th a6166231 🇨🇳 892 60 12ms 15 May 2025 544th SebassNoob 892 60 14ms 5 Aug 2025 544th levinwinter 892 60 14ms 22 Oct 2025 544th Cube14yt 892 60 11ms 16 Nov 2025 544th gigaprofisi 🇺🇸 892 60 10ms 17 Nov 2025 544th amazingalek 🇳🇴 892 60 12ms 20 Dec 2025 544th shandriy 892 60 12ms 23 Jan 2026 544th spidunno 892 60 11ms 17 Feb 2026 574th lynn 892 65 267ms 5 May 2022 574th GrayJoKing 🇦🇺 892 65 250ms 5 May 2022 574th Sakisan 🇧🇪 892 65 178ms 6 May 2022 574th JayXon 🇺🇸 892 65 271ms 17 Oct 2022 574th Steffan153 🇫🇮 892 65 181ms 12 Nov 2022 574th tobeannouncd 892 65 302ms 25 Apr 2025 574th sean-niemann 🇺🇸 892 65 168ms 9 Jun 2025 581st stefangimmillaro 892 71 95ms 2 Oct 2022 581st Steffan153 🇫🇮 892 71 106ms 23 Feb 2023 581st Shanethegamer 🇺🇸 892 71 101ms 16 May 2023 581st sean-niemann 🇺🇸 892 71 100ms 12 Jul 2024 585th frankgraziano 892 75 18ms 23 Feb 2026 586th snoozingnewt 🇨🇦 892 96 112ms 4 Dec 2025 586th Steffan153 🇫🇮 892 96 111ms 27 Feb 2026 588th Lydxn 🇨🇦 892 108 322ms 6 May 2022 588th CaedenHarper 🇨🇦 892 108 346ms 5 Oct 2025 590th primo-ppcg 🇹🇭 891 52 219ms 5 May 2022 590th dvargas46 🇺🇸 891 52 87ms 22 Dec 2022 592nd GrayJoKing 🇦🇺 891 77 76ms 13 Sep 2024 593rd DialFrost 🇸🇬 891 95 30ms 10 Dec 2024 594th canissimia 🇦🇶 891 204 16ms 25 Nov 2023 595th m-tkach 🇺🇦 890 112 116ms 22 Jun 2025 596th mousetail 🇳🇱 889 41 66ms 29 Aug 2025 597th MeWhenI 🇻🇦 889 53 42ms 1 Jun 2022 597th stefangimmillaro 889 53 44ms 2 Oct 2022 597th Haksell 🇦🇶 889 53 43ms 22 Feb 2023 600th ovs-code 🇩🇪 889 73 340ms 22 Jul 2023 First Prev 501–600 of 3,692 Next Last