The Calendar hole will go live in approximately 2 days. Why not try and solve it ahead of time?
𝑒 in all languages in chars. 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 Chars Time Submitted 641st 2bular 784 49 215ms 23 Oct 2024 642nd NewDefectus 🇮🇱 781 60 10ms 14 Feb 2021 642nd jared-hughes 781 60 9ms 6 Oct 2021 642nd didion0 🇺🇸 781 60 10ms 24 Feb 2022 642nd crispshaker 781 60 16ms 18 Mar 2023 642nd elgan65536 781 60 10ms 18 Nov 2023 642nd mathisfun271 781 60 9ms 13 Feb 2024 642nd jipsong 🇩🇪 781 60 9ms 22 Mar 2024 642nd YAJUE114514 781 60 9ms 18 days ago 650th Shanethegamer 🇺🇸 779 56 346ms 18 Jan 2024 650th Yewzir 🇧🇪 779 56 332ms 4 Feb 2024 650th Herbert00709 🇵🇱 779 56 376ms 13 May 2024 653rd CaedenHarper 🇨🇦 778 162 256ms 1 Nov 2025 654th NewDefectus 🇮🇱 777 105 4ms 1 Nov 2021 655th MeWhenI 🇻🇦 776 130 460ms 7 Nov 2025 656th emgordon154 774 71 949ms 10 May 2025 657th jacobly0 🇺🇸 773 102 78ms 10 Oct 2023 658th m-tkach 🇺🇦 773 210 4,787ms 15 Jan 2025 659th stefangimmillaro 772 105 100ms 3 Oct 2023 660th luuumine 🇫🇷 772 136 122ms 17 Nov 2025 661st iczelia 🇩🇪 770 106 4ms 21 Sep 2025 662nd ovs-code 🇩🇪 770 108 172ms 22 Feb 2025 663rd ovs-code 🇩🇪 769 26 42ms 16 May 2024 664th sean-niemann 🇺🇸 769 125 186ms 21 Mar 2025 665th cubed-guy 768 61 11ms 13 Feb 2022 665th enbyte 768 61 23ms 9 Dec 2023 665th snydej 768 61 10ms 3 Dec 2024 668th Shanethegamer 🇺🇸 766 49 51ms 26 May 2022 668th DialFrost 🇸🇬 766 49 43ms 31 May 2024 668th lacrosse 766 49 99ms 29 Nov 2025 671st SirBogman 🇺🇸 765 75 1,249ms 29 Jan 2024 671st DialFrost 🇸🇬 765 75 1,294ms 10 Mar 2025 673rd MeWhenI 🇻🇦 765 106 102ms 31 Jul 2023 674th annaproxy 764 69 114ms 12 Jan 2022 675th daniel-pedersen 🇸🇪 763 63 12ms 6 Mar 2022 675th HamzaM3 763 63 9ms 6 Mar 2022 675th FlorianCassayre 🇫🇷 763 63 11ms 4 Jun 2024 678th MeWhenI 🇻🇦 763 88 364ms 15 Jul 2023 679th Shanethegamer 🇺🇸 763 101 468ms 2 Mar 2022 680th AlexDaniel 🇪🇪 762 37 199ms 24 Feb 2018 680th Natanaelel 🇸🇪 762 37 106ms 16 Apr 2025 682nd postie77 762 116 397ms 17 May 2023 683rd iczelia 🇩🇪 762 133 64ms 21 Sep 2025 684th acotis 761 138 132ms 7 Jun 2025 685th kmathis22 758 133 465ms 23 days ago 686th georgehulme 756 62 17ms 5 Oct 2022 686th Pyroan 756 62 17ms 14 May 2025 688th stefangimmillaro 755 117 47ms 26 Apr 2025 688th SirBogman 🇺🇸 755 117 41ms 3 Jun 2025 690th cure-honey 🇯🇵 754 167 271ms 23 Jun 2021 690th targrik 754 167 277ms 4 Jul 2025 692nd flawr 753 70 125ms 1 Jan 2019 693rd sean-niemann 🇺🇸 753 80 106ms 23 Jul 2023 694th jipsong 🇩🇪 752 73 878ms 8 Apr 2025 695th jared-hughes 751 50 48ms 20 Jan 2023 695th jipsong 🇩🇪 751 50 39ms 8 Apr 2025 697th ovs-code 🇩🇪 750 74 11ms 10 Dec 2023 698th stefangimmillaro 750 168 267ms 21 Oct 2024 699th MeWhenI 🇻🇦 749 118 412ms 8 Dec 2022 700th latvianfarmer17 🇱🇻 745 38 193ms 20 Jul 2023 701st somebody1234 744 63 28ms 2 Mar 2019 701st jiaminglimjm 🇲🇾 744 63 16ms 9 Jan 2021 701st dsh0 744 63 9ms 9 Jun 2022 701st NDR0216 🇹🇼 744 63 16ms 17 Feb 2023 701st fgrosshans 🇫🇷 744 63 9ms 4 May 2025 706th kg583 🇺🇸 743 118 152ms 5 Oct 2025 707th orthoplex 🇨🇽 741 27 40ms 26 Jan 2024 708th HumanoidCPU 739 59 430ms 14 Aug 2024 708th dokutan 739 59 372ms 4 Oct 2024 708th KatieLG 🇬🇧 739 59 380ms 28 Oct 2024 711th CatsAreFluffy 739 65 9ms 20 Dec 2022 711th alexsave 739 65 8ms 4 Nov 2025 713th MeWhenI 🇻🇦 738 75 42ms 14 Feb 2025 714th albanian-laundromat 737 56 722ms 12 Sep 2025 715th prplz 🇦🇺 736 51 46ms 15 Jun 2020 715th Irratix 🇳🇱 736 51 41ms 1 Jul 2022 717th DialFrost 🇸🇬 736 83 3,999ms 19 Nov 2024 718th targrik 736 84 2,867ms 21 Jan 2025 719th annaproxy 736 120 399ms 12 Jan 2023 719th CaedenHarper 🇨🇦 736 120 363ms 19 Oct 2025 First Prev 641–720 of 3,341 Next Last