Collatz in Python 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 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 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 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 Tower of Hanoi 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 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 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 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 Tower of Hanoi Turtle Tutorial # Golfer Points Bytes Time Submitted 672nd MrNiknoc 667 99 20ms 15 Jun 2025 677th OppositeShark 660 100 18ms 19 Jul 2022 677th NOS4A5I 660 100 17ms 10 Jan 2023 677th lomarbrick 660 100 20ms 16 May 2023 677th karlaacastro44 660 100 21ms 5 May 2025 681st markus-rekdal 653 101 26ms 10 May 2022 681st fraserli 🇦🇺 653 101 26ms 2 May 2023 681st FCORMERAIS 653 101 22ms 6 Mar 2024 681st yhm138 653 101 15ms 16 Feb 2025 681st MinecraftFan69420 653 101 20ms 13 days ago 686th PogLop 🇨🇿 647 102 18ms 31 Oct 2022 686th AndersH3 🇸🇪 647 102 16ms 17 May 2023 686th JulieGermainUNT 647 102 23ms 2 Apr 2025 689th enbyte 641 103 20ms 20 Dec 2022 689th rajlath 641 103 18ms 7 Jan 2023 689th mnurzia 641 103 16ms 12 Oct 2023 689th sqrteipi 641 103 20ms 2 Apr 2024 689th calum12345 641 103 19ms 26 Mar 2025 689th SectorCorruptor 641 103 26ms 14 Aug 2025 695th winigo3 635 104 26ms 8 Aug 2022 695th zt14427 635 104 20ms 30 Apr 2023 695th IoLimmer 635 104 17ms 24 Jul 2024 698th LordSir101 629 105 19ms 19 Jul 2022 698th tmanternach 629 105 22ms 24 Nov 2022 698th weber-hge 629 105 15ms 13 Jun 2023 698th Eugen-str 629 105 20ms 24 Oct 2023 702nd ms-tingliang 623 106 16ms 5 Aug 2022 702nd achilleasr 623 106 19ms 7 Nov 2022 702nd OleBrumm 623 106 19ms 8 Jan 2023 702nd AbhilashaTandon 623 106 23ms 19 Sep 2023 702nd sheeperino 🇮🇹 623 106 22ms 11 Oct 2024 707th phpboyscout 617 107 15ms 18 May 2023 707th DrPrettyman 617 107 17ms 5 Jul 2023 707th joseph-w0ng 617 107 19ms 5 Jul 2024 707th EnisEfe0 617 107 21ms 18 May 2025 711th landyrisbad 611 108 21ms 13 Nov 2022 711th cakular 611 108 25ms 17 May 2024 711th glassala 611 108 15ms 25 Oct 2024 711th StronkCheese2 611 108 19ms 42 hours ago 715th tjefferson401 606 109 32ms 16 Sep 2022 715th ariesmarinus 606 109 16ms 21 Nov 2024 717th profJGermain 600 110 19ms 7 Feb 2024 717th JMMMMC 600 110 20ms 23 Oct 2024 717th jtb0362 600 110 21ms 10 May 2025 720th sagnik3 589 112 20ms 8 Aug 2022 720th craftablescience 589 112 20ms 19 Sep 2023 722nd kelseychristensen 584 113 20ms 2 Nov 2022 722nd ArmsTheLimited 584 113 16ms 1 Jun 2023 724th HunterC14 579 114 26ms 18 Oct 2024 725th jstechman 574 115 23ms 24 Feb 2024 725th dan422442 574 115 21ms 19 Oct 2024 727th keelanfh 569 116 18ms 20 Dec 2023 727th returnitynet 569 116 16ms 27 Jan 2025 727th EthanPatel01000101 569 116 17ms 24 days ago 730th gioto64 564 117 26ms 8 Dec 2022 730th WilfredSalmon 564 117 17ms 21 Oct 2023 732nd XianchengZ 559 118 20ms 18 Aug 2023 732nd brindak2005 559 118 18ms 2 May 2025 734th jmmographer 541 122 26ms 21 Oct 2023 734th RucatJ 541 122 18ms 8 Aug 2025 736th xbxbxb007 537 123 22ms 10 Jan 2024 737th kevinnaviapaiva 512 129 27ms 20 Feb 2025 738th AdrianN001 508 130 17ms 6 Aug 2023 739th wyatt-the-hump 504 131 17ms 24 Dec 2022 739th hotmanga 504 131 13ms 20 Oct 2023 739th Jordynar02 504 131 24ms 3 May 2025 742nd Zach10za 496 133 22ms 23 Jan 2024 743rd vtilde 493 134 18ms 8 Jan 2024 744th fig-apple 489 135 12ms 24 Jun 2023 745th S-Ruban 482 137 14ms 25 Feb 2023 746th FLOKI0421 475 139 17ms 4 May 2025 746th noahdorsch 475 139 20ms 5 May 2025 748th bartsowka2000 443 149 20ms 10 Jul 2023 749th KapelMeister 440 150 14ms 5 Sep 2025 750th sa1640 429 154 15ms 28 Apr 2025 First Prev 676–750 of 798 Next Last