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 Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly 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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 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 Tower of Hanoi Turtle Tutorial # Golfer Points Bytes Time Submitted 34th mathisfun271 900 70 18ms 13 Feb 2024 34th Just4FunCoder 900 70 19ms 17 Feb 2024 34th ThijsLuttikhuis 900 70 26ms 3 Mar 2024 34th elgan65536 900 70 20ms 5 Mar 2024 34th jtaxen 900 70 22ms 1 Apr 2024 34th HumanoidCPU 900 70 29ms 6 May 2024 34th abc7-12 900 70 18ms 6 May 2024 34th ahmetdemirag 🇨🇾 900 70 19ms 9 Jun 2024 34th FranklinJiaChen 900 70 19ms 4 Jul 2024 34th 5cw 🇺🇸 900 70 18ms 13 Jul 2024 34th CaedenHarper 🇨🇦 900 70 18ms 3 Aug 2024 34th emgordon154 900 70 26ms 5 Aug 2024 34th dokutan 900 70 19ms 9 Aug 2024 34th jatloe 900 70 19ms 26 Aug 2024 34th lgrandco 900 70 18ms 9 Oct 2024 34th snydej 900 70 19ms 21 Nov 2024 34th erikji 900 70 19ms 4 Feb 2025 34th CutSandstone 900 70 20ms 4 Feb 2025 34th albanian-laundromat 900 70 18ms 12 Apr 2025 34th xsot 🇸🇬 900 70 20ms 3 May 2025 34th fuzzylojik-golf 🇺🇸 900 70 19ms 14 Jun 2025 34th smilesformiles3 900 70 22ms 14 Jun 2025 34th KasperKivimaeki 🇫🇮 900 70 19ms 30 Jun 2025 34th adaGrad1 900 70 20ms 10 Aug 2025 34th EthanJantz 900 70 18ms 10 Aug 2025 34th qpwoeirut 900 70 16ms 10 Aug 2025 34th katss2 900 70 19ms 17 Aug 2025 34th intgrah 900 70 22ms 23 Sep 2025 34th ryyyn 🇺🇸 900 70 20ms 24 days ago 34th luuumine 🇫🇷 900 70 19ms 20 days ago 34th Babafaba 900 70 18ms 16 days ago 34th commandblockguy 🇺🇸 900 70 22ms 7 days ago 34th hellopir2 900 70 18ms 11 hours ago 109th TFeld00 🇩🇰 887 71 25ms 17 May 2022 109th DialFrost 🇸🇬 887 71 36ms 15 Nov 2022 109th StefanHabel 🇨🇦 887 71 18ms 29 Nov 2022 109th nstearns96 🇬🇧 887 71 19ms 11 Jan 2023 109th hallvabo 🇳🇴 887 71 19ms 7 Feb 2023 109th anter69 🇭🇺 887 71 18ms 21 May 2024 109th rucin93 🇵🇱 887 71 17ms 10 Jul 2024 109th lelbal 887 71 18ms 26 Aug 2025 109th HETHAT 🇩🇿 887 71 24ms 23 Sep 2025 109th 09cf 887 71 17ms 4 days ago 119th scpchicken 🇵🇼 875 72 20ms 4 May 2022 119th sultan 875 72 16ms 6 Jun 2022 119th annaproxy 875 72 21ms 22 Aug 2022 119th BlankSpruce 875 72 27ms 9 Sep 2022 119th ValentinCassayre 875 72 20ms 8 Oct 2022 119th mathb0y512 875 72 21ms 1 Dec 2022 119th NoahBolohan 🇨🇦 875 72 23ms 28 Feb 2023 119th neel11235813 875 72 19ms 8 Mar 2023 119th Kacarott 🇦🇺 875 72 15ms 24 Mar 2023 119th Fracture17 875 72 20ms 8 Apr 2023 119th ayushdewan 875 72 24ms 7 May 2023 119th PeterTillema 🇳🇱 875 72 24ms 17 Oct 2023 119th Glinte 875 72 23ms 11 Dec 2023 119th nanatsu8 875 72 25ms 11 May 2024 119th thej10n 875 72 20ms 12 Jun 2024 119th duckyluuk 🇳🇱 875 72 19ms 13 Jun 2024 119th tobeannouncd 875 72 16ms 25 Apr 2025 119th YAJUE114514 875 72 17ms 15 Aug 2025 119th blaztoma 🇱🇹 875 72 23ms 26 Sep 2025 138th AdamHe17 863 73 22ms 31 May 2022 138th AliceFord 863 73 21ms 2 Jun 2022 138th Natanaelel 🇸🇪 863 73 16ms 16 Jun 2022 138th btjones0 863 73 23ms 21 Jun 2022 138th marcin7Cd 863 73 19ms 27 Jun 2022 138th tri1212 🇻🇳 863 73 20ms 18 Jul 2022 138th vhoulbreque 🇫🇷 863 73 21ms 18 Aug 2022 138th KatieLG 🇬🇧 863 73 24ms 29 Aug 2022 138th tkr-sh 🇰🇵 863 73 21ms 8 Sep 2022 138th jroscoe5 863 73 21ms 15 Sep 2022 138th fredrik-bakke 🇳🇴 863 73 20ms 18 Sep 2022 138th firegene 🇮🇪 863 73 19ms 27 Sep 2022 138th OhmNomNom 863 73 24ms 7 Oct 2022 First Prev 76–150 of 805 Next Last