The Calendar hole will go live in approximately 13 days. Why not try and solve it ahead of time?
Emirp Numbers in Python 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 477th Phanabani 🇺🇸 528 127 11ms 21 Oct 2020 477th potato-jackson 528 127 14ms 4 Mar 2021 477th LiamKrenn 528 127 13ms 25 Jul 2022 477th nmgetahun 528 127 63ms 9 Dec 2022 477th Ripick 528 127 14ms 1 Feb 2023 486th yokasuretsu 523 128 11ms 13 Apr 2018 486th mackenziem116 523 128 12ms 2 Aug 2018 486th ArturLange 523 128 19ms 5 Sep 2018 486th mvrkws 523 128 19ms 3 Dec 2018 486th matheusnervis 523 128 28ms 15 Jan 2019 486th artieleach 523 128 19ms 12 Dec 2020 486th hymanimy 523 128 25ms 23 Jul 2021 486th Trunksistor 🇫🇷 523 128 27ms 18 May 2022 486th AodhanDalton 523 128 12ms 2 Sep 2022 486th nayakrujul 523 128 13ms 3 Jan 2023 486th mbittner20 523 128 34ms 27 May 2023 486th dgambit 523 128 45ms 8 May 2024 486th Artemis21 🇬🇧 523 128 12ms 2 Jan 2025 486th ridingqwerty 🇺🇸 523 128 30ms 21 May 2025 486th tejapvk 523 128 9ms 19 Jun 2025 486th Code-Coder-coder 523 128 13ms 11 Oct 2025 486th madeforlosers 523 128 37ms 11 Nov 2025 503rd djtuBIG-MaliceX 519 129 19ms 31 Jan 2018 503rd evelyn-fu 519 129 19ms 15 Aug 2018 503rd rjomabolla 519 129 15ms 3 Aug 2020 503rd jackdonofrio 519 129 30ms 25 Sep 2020 503rd TimLeffke 519 129 29ms 15 Aug 2022 503rd Cynopolis 519 129 41ms 11 Oct 2023 503rd bac0id 519 129 14ms 29 Jun 2024 510th omgardner 515 130 13ms 10 Jul 2019 510th kypi 515 130 46ms 18 Feb 2020 510th vonKrafft 515 130 14ms 26 Mar 2020 510th boxjelly 515 130 15ms 12 Feb 2021 510th TheSmilingTurtle 515 130 48ms 19 May 2022 510th AliceFord 515 130 12ms 2 Jun 2022 510th Wildst 515 130 21ms 2 Nov 2022 510th bobbysq 515 130 70ms 23 Jan 2023 510th JamesTadleyGreen 515 130 17ms 11 Apr 2024 519th ProtD 511 131 112ms 27 Feb 2018 519th ari-gutierrez 511 131 12ms 22 Oct 2018 519th tjtnorton 511 131 9ms 4 Dec 2018 519th skps2010 511 131 17ms 3 Jan 2019 519th jotslo 🇬🇧 511 131 13ms 11 Jul 2019 519th Guptacos 511 131 30ms 2 Aug 2020 519th Sudoaepothetic 511 131 30ms 5 Dec 2021 519th LogicalJoe 511 131 9ms 14 Mar 2023 519th Eugen-str 511 131 20ms 3 Nov 2023 519th mar-moraes 511 131 12ms 12 Feb 2024 519th wenbang24 511 131 12ms 6 Jul 2024 530th hdformat 508 132 11ms 8 Jun 2020 530th befoster 508 132 28ms 10 Apr 2021 530th martinnorling 🇸🇪 508 132 11ms 2 Feb 2022 530th PeterZaka 508 132 81ms 15 Jan 2023 530th damoc1es 508 132 13ms 16 Apr 2023 535th axpepper 504 133 27ms 29 Sep 2018 535th SurplusSineWaves 504 133 30ms 10 Jun 2019 535th EB-Brown 504 133 53ms 24 Aug 2019 535th ianpoe 504 133 47ms 20 Apr 2020 535th Pena86 504 133 23ms 28 Feb 2021 535th kenny14231 504 133 31ms 5 Aug 2022 535th omri2001 504 133 21ms 22 Oct 2022 535th GWStuart 504 133 29ms 21 Nov 2024 535th RandGuy 504 133 9ms 21 days ago 544th PossessedLego 500 134 164ms 12 May 2019 544th derekthatcher 500 134 20ms 22 Sep 2020 544th wrhm 500 134 30ms 13 Dec 2020 544th sbr075 500 134 21ms 7 Dec 2021 544th tails618 500 134 10ms 6 Dec 2022 549th sirrus233 496 135 12ms 7 Dec 2017 549th zuparnowa 496 135 18ms 23 Apr 2019 549th oriphi 496 135 32ms 16 Jun 2019 549th henrytranter 496 135 19ms 20 Sep 2019 549th ethandhunt 496 135 27ms 20 Jul 2021 549th amollberg 🇸🇪 496 135 15ms 4 Jan 2022 549th vodker1 496 135 21ms 9 Mar 2022 549th sleepyStick 496 135 30ms 11 Mar 2022 549th aeonsablaze 496 135 20ms 22 Nov 2022 549th brimstonetrader 496 135 19ms 26 Dec 2023 549th tknight00 496 135 13ms 25 Jan 2024 549th HanaEndUser 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