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 561st aDwarfNamedUrist 640 138 119ms 4 Sep 2024 562nd lhulinsky 638 120 10ms 23 Oct 2024 562nd arjunarya1 638 120 10ms 11 Sep 2025 564th stefangimmillaro 638 188 208ms 4 Jun 2025 565th SirBogman 🇺🇸 637 73 348ms 23 Jul 2025 566th Shanethegamer 🇺🇸 636 72 1,301ms 1 Sep 2024 566th anter69 🇭🇺 636 72 1,291ms 25 Oct 2024 568th weeble 636 77 8ms 21 Dec 2025 569th Ripick 636 127 387ms 6 Sep 2024 570th dokutan 635 120 5ms 1 Sep 2024 570th Shanethegamer 🇺🇸 635 120 7ms 2 Sep 2024 572nd KatieLG 🇬🇧 633 112 11ms 1 Sep 2024 572nd CaedenHarper 🇨🇦 633 112 11ms 22 Aug 2025 574th olleicua 🇺🇸 631 67 39ms 6 Sep 2024 575th cthierfelder 🇲🇨 630 193 75ms 5 Sep 2025 576th RedzGoose 🇦🇺 628 101 424ms 15 Oct 2024 577th kevinnaviapaiva 628 122 10ms 16 Feb 2025 578th kmathis22 628 155 496ms 14 Dec 2025 579th BalaM314 627 113 10ms 4 Feb 2025 579th Program-Pi 627 113 12ms 15 days ago 581st SirBogman 🇺🇸 626 59 129ms 23 Jul 2025 582nd eddvrs 623 123 11ms 29 Sep 2024 583rd Shanethegamer 🇺🇸 622 68 36ms 1 Sep 2024 583rd emgordon154 622 68 39ms 1 Sep 2024 583rd rvs314 622 68 38ms 24 Sep 2024 583rd tatzyr 🇯🇵 622 68 37ms 10 Oct 2025 587th DialFrost 🇸🇬 622 111 1ms 22 Nov 2024 588th albanian-laundromat 621 69 1,006ms 12 Sep 2025 589th KrausRaus 🇺🇸 621 114 12ms 1 Sep 2024 589th JOrE20 621 114 10ms 21 days ago 591st yokasuretsu 618 124 10ms 10 Jul 2025 591st hamilton-bonds 618 124 10ms 24 Jul 2025 591st robin-scragg 618 124 10ms 18 Oct 2025 594th lifthrasiir 🇰🇷 618 227 46ms 11 Dec 2024 595th Andrey-Plotnikov 616 115 11ms 30 Sep 2025 596th aliakseikalosha 616 144 391ms 5 Sep 2024 597th KatieLG 🇬🇧 613 69 37ms 1 Sep 2024 598th Shanethegamer 🇺🇸 612 102 2,318ms 25 Oct 2024 598th dokutan 612 102 2,323ms 26 Oct 2024 600th Natanaelel 🇸🇪 611 112 14ms 15 May 2025 601st BambooleanLogic 🇸🇪 611 116 9ms 19 Nov 2024 601st acollett89 611 116 9ms 4 Aug 2025 603rd msbranicky 608 86 182ms 16 Sep 2024 604th nhausspiegel 608 126 10ms 13 Sep 2024 605th CaedenHarper 🇨🇦 603 71 1,071ms 27 Sep 2025 606th matsagad 603 127 10ms 16 Jan 2025 607th Shanethegamer 🇺🇸 603 134 415ms 1 Sep 2024 608th dokutan 603 147 411ms 3 Nov 2024 609th dokutan 602 76 1,264ms 3 Sep 2024 610th Shanethegamer 🇺🇸 602 107 85ms 1 Sep 2024 611th Arkadios200 602 132 98ms 11 Oct 2025 612th mamamia5x 600 118 12ms 12 Sep 2024 613th inventshah 599 150 2ms 1 Sep 2024 614th xyangst 598 128 9ms 12 Oct 2024 614th 123mjb 598 128 9ms 19 Nov 2025 616th mousetail 🇳🇱 597 105 5ms 3 Sep 2024 617th h3ra993huskp 🇯🇵 597 163 741ms 30 Nov 2025 618th emgordon154 595 104 187ms 14 Nov 2024 619th CaedenHarper 🇨🇦 595 149 429ms 16 Oct 2025 620th MeWhenI 🇻🇦 595 177 40ms 4 Sep 2024 620th Shanethegamer 🇺🇸 595 177 45ms 4 Sep 2024 622nd KatieLG 🇬🇧 594 77 1,342ms 1 Sep 2024 623rd BREMAUCY 🇫🇷 594 316 12ms 7 Aug 2025 624th KatieLG 🇬🇧 589 135 97ms 21 Nov 2025 625th luuumine 🇫🇷 588 204 204ms 18 Nov 2025 626th DialFrost 🇸🇬 586 107 6ms 1 Sep 2024 627th cbrt-x 585 151 121ms 11 Sep 2024 628th Mabeloid 🇳🇴 582 109 490ms 17 Sep 2024 629th dokutan 582 181 41ms 1 Sep 2024 630th snoozingnewt 🇨🇦 582 226 281ms 1 Sep 2024 631st GeorgeStechman 🇬🇧 581 122 11ms 5 Nov 2024 631st gigaprofisi 🇺🇸 581 122 11ms 10 Aug 2025 633rd muser-logiccpu 🇺🇦 580 119 2ms 23 Jul 2025 634th dokutan 578 107 166ms 27 days ago 635th xyangst 576 123 10ms 15 Oct 2024 636th JohandeRuiter 🇳🇱 576 156 2ms 2 Sep 2024 637th emgordon154 573 133 13ms 16 Dec 2024 638th vhoulbreque 🇫🇷 573 146 196ms 11 Nov 2025 639th dokutan 571 74 37ms 20 Feb 2025 640th dokutan 571 75 973ms 29 Aug 2025 First Prev 561–640 of 768 Next Last