PalindromemordnilaP 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 Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions 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 Multitap Input 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 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus 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 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 ><> ALGOL 68 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 APL ArkScript Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> ALGOL 68 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 APL ArkScript Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily 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 Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions 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 Multitap Input 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 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus 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 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 400th alexeldridge 773 99 11ms 14 Sep 2024 400th Just4FunCoder 773 99 10ms 14 Sep 2025 400th 0xjac 🇨🇭 773 99 9ms 24 Nov 2025 404th dokutan 773 104 203ms 1 Sep 2024 405th error256 769 139 514ms 24 Sep 2024 406th emgordon154 769 156 403ms 4 Mar 2025 407th edsrzf 🇳🇿 767 83 106ms 11 days ago 408th Kacarott 🇦🇺 766 100 9ms 3 Sep 2024 408th Artemis21 🇬🇧 766 100 11ms 4 Jan 2025 410th lifthrasiir 🇰🇷 765 83 431ms 2 Dec 2024 410th albanian-laundromat 765 83 461ms 4 Aug 2025 410th CaedenHarper 🇨🇦 765 83 494ms 9 Aug 2025 413th CatsAreFluffy 763 64 49ms 4 Nov 2024 414th error256 762 116 122ms 2 Sep 2024 415th madex 🇩🇪 758 101 10ms 1 Sep 2024 415th RedzGoose 🇦🇺 758 101 10ms 15 Oct 2024 415th JunkIce 758 101 10ms 25 Oct 2024 418th targrik 756 83 5ms 8 Feb 2025 419th Shanethegamer 🇺🇸 755 117 119ms 1 Sep 2024 420th sean-niemann 🇺🇸 755 118 3ms 16 Jan 2025 421st stefangimmillaro 754 94 10ms 4 Sep 2024 422nd sciencejiho 751 102 9ms 13 Sep 2024 422nd Papushkado 751 102 10ms 10 Nov 2025 422nd TheSecondComing123 751 102 10ms 4 Feb 2026 425th DialFrost 🇸🇬 751 225 1,514ms 20 Jan 2025 426th UnderKoen 🇳🇱 750 185 63ms 1 Dec 2025 427th kg583 🇺🇸 749 102 5ms 19 Dec 2025 428th error256 748 226 1,431ms 28 Mar 2025 429th Shanethegamer 🇺🇸 746 95 10ms 1 Sep 2024 429th HumanoidCPU 746 95 10ms 29 Oct 2024 431st Mikey-Beep 🇬🇧 745 119 430ms 2 Sep 2024 432nd julian-hoelz 743 103 10ms 16 Sep 2024 432nd StefanHabel 🇨🇦 743 103 94ms 22 Mar 2025 434th pardouin 🇫🇷 741 87 77ms 3 Sep 2024 434th Steffan153 🇫🇮 741 87 81ms 11 Feb 2026 436th MostParsingVex 741 164 70ms 6 Jan 2025 437th xsot 🇸🇬 739 58 1,009ms 19 Dec 2025 438th stefangimmillaro 739 169 43ms 3 Sep 2024 439th Shanethegamer 🇺🇸 737 71 233ms 1 Sep 2024 439th MarcMush 🇫🇷 737 71 536ms 16 Sep 2024 441st ComputerKWasTaken 🇺🇸 736 104 10ms 2 Sep 2024 441st elgan65536 🇺🇸 736 104 9ms 23 Sep 2024 441st NickTheEASDude 🇺🇸 736 104 10ms 7 Oct 2025 444th FlyingPenguin223 734 94 1ms 18 Sep 2024 445th DialFrost 🇸🇬 734 271 1,620ms 17 Jan 2026 446th GolfingSuccess 🇬🇷 733 30 55ms 1 Sep 2024 446th MeWhenI 🇻🇦 733 30 61ms 8 Jun 2025 446th CaedenHarper 🇨🇦 733 30 45ms 1 Dec 2025 449th error256 733 121 430ms 24 Sep 2024 450th snoozingnewt 🇨🇦 731 110 88ms 22 Nov 2025 451st targrik 730 97 9ms 8 Feb 2025 452nd Shanethegamer 🇺🇸 729 122 6ms 4 Oct 2024 453rd Shanethegamer 🇺🇸 728 105 4ms 1 Sep 2024 454th Shanethegamer 🇺🇸 728 128 473ms 1 Sep 2024 455th albanian-laundromat 728 232 1,438ms 15 Oct 2025 456th emgordon154 726 63 1,252ms 18 Nov 2024 457th bitsandbeyond 🇳🇱 726 64 273ms 1 Dec 2025 458th Shanethegamer 🇺🇸 726 95 2ms 2 Sep 2024 459th CutSandstone 722 106 12ms 21 Dec 2024 460th janAkali 🇷🇺 722 112 386ms 12 Feb 2026 461st GrayJoKing 🇦🇺 720 86 135ms 2 Sep 2024 462nd kg583 🇺🇸 719 106 6ms 26 Sep 2025 463rd dokutan 719 124 2ms 5 Sep 2024 464th Kacarott 🇦🇺 717 132 3ms 4 Sep 2024 465th galloj 🇨🇿 716 107 10ms 4 Sep 2024 465th FlorianCassayre 🇫🇷 716 107 10ms 9 Sep 2024 465th jared-hughes 716 107 10ms 10 Sep 2024 465th nstearns96 🇬🇧 716 107 9ms 13 Nov 2024 465th rchalamala 716 107 10ms 2 Jan 2025 465th brochmann 🇸🇪 716 107 9ms 16 Oct 2025 471st JDiLenarda 🇫🇷 715 170 1,518ms 3 Sep 2024 472nd mykytamatiukha 714 168 233ms 15 Jan 2026 473rd snyderek 🇺🇸 712 150 60ms 15 Sep 2024 474th JesseNoEyes 🇺🇸 709 108 10ms 30 Sep 2024 475th Shanethegamer 🇺🇸 709 114 119ms 2 Sep 2024 476th alexsave 708 100 10ms 22 Sep 2024 477th HumanoidCPU 705 90 452ms 2 Sep 2024 478th error256 705 97 15ms 14 Jan 2026 479th adriweb 🇫🇷 704 98 2ms 4 Sep 2024 479th sean-niemann 🇺🇸 704 98 2ms 5 Sep 2024 First Prev 401–480 of 765 Next Last