PalindromemordnilaP in all languages in bytes. Cheevos Holes Recent Holes Langs Medals Misc 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 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 CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Tower of Hanoi Turtle Tutorial All Languages ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir 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 Erlang 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 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 Erlang 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 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 CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Tower of Hanoi Turtle Tutorial # Golfer Points Bytes Time Submitted 526th SirBogman 🇺🇸 622 59 138ms 23 Jul 2025 527th DialFrost 🇸🇬 622 111 2ms 22 Nov 2024 528th KrausRaus 🇺🇸 621 114 36ms 1 Sep 2024 529th eddvrs 621 123 10ms 29 Sep 2024 530th Shanethegamer 🇺🇸 620 68 35ms 1 Sep 2024 530th emgordon154 620 68 36ms 1 Sep 2024 530th rvs314 620 68 36ms 24 Sep 2024 530th tatzyr 🇯🇵 620 68 38ms 27 days ago 534th emgordon154 619 41 3ms 30 Jul 2025 535th MeWhenI 🇻🇦 619 86 751ms 15 Sep 2025 536th lifthrasiir 🇰🇷 618 227 47ms 11 Dec 2024 537th yokasuretsu 616 124 14ms 10 Jul 2025 537th hamilton-bonds 616 124 10ms 24 Jul 2025 537th mossiegoat 616 124 11ms 19 days ago 540th Andrey-Plotnikov 615 115 9ms 30 Sep 2025 541st aliakseikalosha 614 144 368ms 5 Sep 2024 542nd KatieLG 🇬🇧 612 69 37ms 1 Sep 2024 543rd Natanaelel 🇸🇪 611 112 20ms 15 May 2025 544th Shanethegamer 🇺🇸 610 102 2,200ms 25 Oct 2024 544th dokutan 610 102 2,099ms 26 Oct 2024 546th BambooleanLogic 🇸🇪 610 116 9ms 19 Nov 2024 546th acollett89 610 116 10ms 4 Aug 2025 548th msbranicky 606 86 175ms 16 Sep 2024 549th nhausspiegel 606 126 15ms 13 Sep 2024 550th emgordon154 606 138 14ms 1 Jan 2025 551st matsagad 602 127 11ms 16 Jan 2025 552nd dokutan 601 76 852ms 3 Sep 2024 553rd dokutan 601 147 372ms 3 Nov 2024 554th mamamia5x 600 118 9ms 12 Sep 2024 555th Arkadios200 600 132 101ms 26 days ago 556th Shanethegamer 🇺🇸 600 134 353ms 1 Sep 2024 557th Shanethegamer 🇺🇸 599 107 348ms 1 Sep 2024 558th inventshah 598 150 2ms 1 Sep 2024 559th xyangst 597 128 11ms 12 Oct 2024 560th MeWhenI 🇻🇦 595 177 42ms 4 Sep 2024 560th Shanethegamer 🇺🇸 595 177 41ms 4 Sep 2024 562nd emgordon154 594 104 147ms 14 Nov 2024 563rd mousetail 🇳🇱 594 105 4ms 3 Sep 2024 564th BREMAUCY 🇫🇷 594 316 17ms 7 Aug 2025 565th KatieLG 🇬🇧 593 77 918ms 1 Sep 2024 566th CaedenHarper 🇨🇦 593 149 363ms 21 days ago 567th DialFrost 🇸🇬 583 107 5ms 1 Sep 2024 568th cbrt-x 583 151 142ms 11 Sep 2024 569th dokutan 582 181 38ms 1 Sep 2024 570th Mabeloid 🇳🇴 580 109 809ms 17 Sep 2024 571st Upload-and-View 🇺🇦 580 119 2ms 23 Jul 2025 572nd GeorgeStechman 🇬🇧 580 122 10ms 5 Nov 2024 572nd gigaprofisi 🇺🇸 580 122 12ms 10 Aug 2025 574th snoozingnewt 🇺🇸 580 226 280ms 1 Sep 2024 575th xyangst 575 123 10ms 15 Oct 2024 576th JohandeRuiter 🇳🇱 575 156 2ms 2 Sep 2024 577th dokutan 570 74 39ms 20 Feb 2025 578th emgordon154 570 133 14ms 16 Dec 2024 579th TeodorDyakov 🇧🇬 564 159 2ms 6 Sep 2025 580th smiksky 🇺🇸 562 136 10ms 16 Oct 2024 581st tomh1012 561 126 11ms 18 Sep 2025 582nd dokutan 561 132 4ms 1 Sep 2024 583rd MostParsingVex 561 160 43ms 30 Sep 2024 584th Stockoh 🇫🇷 558 137 9ms 17 Oct 2024 585th brimstonetrader 554 138 15ms 17 Oct 2024 586th RedzGoose 🇦🇺 553 145 111ms 9 Sep 2024 587th msbranicky 548 135 4ms 1 Sep 2024 588th dokutan 546 113 156ms 22 Oct 2024 589th alphafalfa 540 105 4ms 1 Nov 2024 590th KatieLG 🇬🇧 539 128 2ms 2 Oct 2025 591st mm1013g 538 142 10ms 2 Sep 2024 592nd Shanethegamer 🇺🇸 535 91 25ms 1 Sep 2024 593rd snoozingnewt 🇺🇸 534 79 34ms 25 days ago 594th albanian-laundromat 533 352 16ms 18 Sep 2025 595th trijin 529 118 4ms 5 Oct 2024 596th MostParsingVex 528 97 20ms 2 Oct 2024 597th Shanethegamer 🇺🇸 526 183 370ms 24 Sep 2025 598th pickerj 523 146 12ms 12 Sep 2024 599th tomh1012 523 169 319ms 17 Sep 2025 600th Misaka18520 520 206 386ms 14 Sep 2024 First Prev 526–600 of 682 Next Last