The Calendar hole will go live in approximately 7 days. Why not try and solve it ahead of time?
ln 2 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 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 Bytes Time Submitted 478th jiaminglimjm 🇲🇾 768 67 26ms 5 Jul 2024 482nd MeWhenI 🇻🇦 768 107 110ms 1 Aug 2023 483rd SirBogman 🇺🇸 766 52 318ms 4 Aug 2023 483rd bitsandbeyond 🇳🇱 766 52 1,380ms 5 Nov 2025 485th alexsave 765 66 22ms 16 Nov 2025 486th eprovst 🇧🇪 764 37 69ms 16 Sep 2025 487th edsrzf 🇳🇿 761 108 114ms 29 Apr 2025 488th primo-ppcg 🇹🇭 760 48 91ms 1 Aug 2023 488th JayXon 🇺🇸 760 48 87ms 1 Aug 2023 488th emgordon154 760 48 48ms 20 Sep 2025 491st stefangimmillaro 760 87 3,243ms 19 Nov 2024 492nd setop 757 68 18ms 18 Aug 2023 492nd levavft 757 68 94ms 27 Oct 2023 494th GrayJoKing 🇦🇺 753 148 90ms 27 Feb 2024 495th SirBogman 🇺🇸 752 130 6ms 1 Aug 2023 496th MeWhenI 🇻🇦 751 53 323ms 14 Jul 2024 497th CornerMercury 🇬🇧 750 32 68ms 28 Sep 2023 498th snoozingnewt 🇨🇦 749 58 1,281ms 22 Oct 2025 499th inventshah 749 148 1,640ms 23 Jul 2024 500th m-tkach 🇺🇦 749 210 151ms 17 Dec 2023 501st emgordon154 747 103 509ms 27 May 2025 502nd acotis 747 175 158ms 29 Jun 2025 503rd zacjl 746 45 15ms 21 Jan 2025 503rd DialFrost 🇸🇬 746 45 17ms 21 Jan 2025 503rd primo-ppcg 🇹🇭 746 45 15ms 16 Apr 2025 506th falsidge 746 69 198ms 9 Jul 2024 506th hamilton-bonds 746 69 18ms 9 Sep 2024 508th qwertzguy 🇫🇷 745 66 399ms 25 Mar 2025 509th emgordon154 745 81 92ms 7 Dec 2024 510th sean-niemann 🇺🇸 745 108 2,115ms 3 Jul 2025 511th SirBogman 🇺🇸 744 149 68ms 1 Aug 2023 512th Yax42 🇫🇷 742 122 440ms 26 Nov 2025 513th edsrzf 🇳🇿 736 61 86ms 15 days ago 514th Lv0Sys 🇵🇱 731 69 11ms 15 days ago 515th Herbert00709 🇵🇱 727 33 70ms 5 May 2024 515th lifthrasiir 🇰🇷 727 33 67ms 5 Dec 2024 517th 0dyse 725 53 211ms 7 May 2025 518th davecame 725 71 23ms 12 Oct 2023 518th Pyroan 725 71 17ms 11 Mar 2025 520th stefangimmillaro 724 55 352ms 5 Aug 2023 521st two-bad 🇬🇧 721 70 14ms 13 Dec 2023 522nd jerrandolph 721 191 567ms 30 Sep 2025 523rd DialFrost 🇸🇬 719 92 3,643ms 28 Oct 2024 524th XioR112 🇵🇱 715 72 17ms 29 Aug 2023 524th rollershutter 715 72 17ms 9 Nov 2023 524th Dataen 715 72 17ms 10 Jan 2024 524th Hebelub 715 72 19ms 10 Jan 2024 524th jfallon1997 715 72 19ms 30 Apr 2024 524th pinguicula 715 72 11ms 15 Aug 2024 524th ImpressedByRocks 715 72 176ms 24 May 2025 524th FortuiteMan 🇫🇷 715 72 18ms 28 Sep 2025 532nd stefangimmillaro 714 193 276ms 16 Sep 2023 533rd tomh1012 713 127 436ms 16 Sep 2025 534th adamnielson42 🇺🇸 705 73 18ms 14 Aug 2023 534th jtaxen 705 73 18ms 17 Mar 2024 534th ei14 705 73 181ms 23 May 2024 534th EnTerr 705 73 18ms 17 Jun 2024 534th kasarino 705 73 96ms 22 days ago 534th YAJUE114514 705 73 10ms 13 days ago 540th lynn 705 223 209ms 4 Aug 2023 541st msbranicky 698 55 233ms 12 Jan 2024 542nd dokutan 696 74 17ms 31 Dec 2023 543rd kg583 🇺🇸 694 87 81ms 23 Nov 2025 544th MeWhenI 🇻🇦 693 171 1,269ms 28 Mar 2025 545th msbranicky 692 199 777ms 31 Aug 2023 546th zakariamouhid 691 73 2,503ms 1 Aug 2023 547th Daniikk1012 690 41 268ms 3 Nov 2025 548th stefangimmillaro 688 190 141ms 4 Jun 2025 549th clemmers 🇺🇸 686 75 18ms 1 Aug 2023 549th aksyristos 686 75 18ms 1 Aug 2023 549th bac0id 686 75 17ms 20 Sep 2023 552nd msbranicky 677 76 17ms 3 Aug 2023 552nd StHagel 677 76 17ms 3 Aug 2023 552nd SniperSmiley 🇺🇸 677 76 18ms 15 Aug 2023 552nd RYNO8 677 76 20ms 20 Aug 2023 552nd cingulataluke 677 76 17ms 27 Aug 2023 552nd keelimeguy 🇺🇸 677 76 17ms 6 Nov 2023 552nd epic-programmer-guy 677 76 17ms 31 Dec 2023 552nd zwxzwxzwx21 677 76 18ms 16 Jan 2024 552nd Just4FunCoder 677 76 17ms 26 Feb 2024 First Prev 481–560 of 1,733 Next Last