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 Gray Code Decoder Gray Code Encoder 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 Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> ALGOL 68 ArkScript 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 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 ArkScript 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 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 Gray Code Decoder Gray Code Encoder 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 Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 641st snoozingnewt 🇨🇦 585 226 326ms 1 Sep 2024 642nd Mabeloid 🇳🇴 583 109 569ms 17 Sep 2024 643rd muser-logiccpu 🇺🇦 582 119 2ms 23 Jul 2025 644th GeorgeStechman 🇬🇧 581 122 12ms 5 Nov 2024 644th gigaprofisi 🇺🇸 581 122 11ms 10 Aug 2025 646th vhoulbreque 🇫🇷 581 146 182ms 11 Nov 2025 647th flekAI 580 73 38ms 3 days ago 648th dokutan 580 107 165ms 14 Feb 2026 649th JohandeRuiter 🇳🇱 579 156 2ms 2 Sep 2024 650th xyangst 577 123 10ms 15 Oct 2024 651st emgordon154 577 133 14ms 16 Dec 2024 652nd dokutan 574 75 1,157ms 29 Aug 2025 653rd dokutan 573 74 37ms 20 Feb 2025 654th dokutan 569 132 3ms 1 Sep 2024 655th TeodorDyakov 🇧🇬 568 159 2ms 6 Sep 2025 656th emgordon154 566 113 111ms 4 Dec 2025 657th TheZwierzLF 🇵🇱 565 75 35ms 27 Dec 2025 658th HumanoidCPU 564 110 151ms 22 Nov 2025 659th MostParsingVex 564 160 27ms 30 Sep 2024 660th tomh1012 563 126 11ms 18 Sep 2025 661st smiksky 🇺🇸 563 136 10ms 16 Oct 2024 662nd RedzGoose 🇦🇺 563 145 126ms 9 Sep 2024 663rd Stockoh 🇫🇷 559 137 10ms 17 Oct 2024 664th flekAI 558 127 10ms 3 days ago 665th msbranicky 556 135 3ms 1 Sep 2024 666th brimstonetrader 555 138 11ms 17 Oct 2024 667th jusaka 550 40 46ms 23 hours ago 668th dokutan 548 155 220ms 1 Sep 2024 669th DialFrost 🇸🇬 542 76 1,023ms 1 Aug 2025 670th Shanethegamer 🇺🇸 542 206 32ms 4 Sep 2024 671st KatieLG 🇬🇧 541 128 2ms 2 Oct 2025 672nd Shanethegamer 🇺🇸 539 91 22ms 1 Sep 2024 673rd mm1013g 539 142 10ms 2 Sep 2024 674th snoozingnewt 🇨🇦 536 79 37ms 12 Oct 2025 675th trijin 534 118 5ms 5 Oct 2024 676th Shanethegamer 🇺🇸 534 183 492ms 24 Sep 2025 677th albanian-laundromat 🇺🇸 533 352 11ms 18 Sep 2025 678th AstroOrbis 529 145 7ms 25 Feb 2026 679th tomh1012 527 169 420ms 17 Sep 2025 680th pickerj 525 146 11ms 12 Sep 2024 681st ravnskjaer 🇩🇰 525 186 469ms 15 Dec 2025 682nd CaedenHarper 🇨🇦 520 188 493ms 3 Oct 2025 683rd error256 517 134 2ms 24 Sep 2024 684th rboath 513 159 97ms 18 Dec 2024 685th dokutan 513 174 10ms 28 Feb 2026 686th jusaka 512 422 1,725ms 17 hours ago 687th dbut2 🇦🇺 507 261 337ms 3 Sep 2024 688th snoozingnewt 🇨🇦 503 141 11ms 12 Oct 2025 689th MeWhenI 🇻🇦 500 86 1,062ms 15 Sep 2025 690th snoozingnewt 🇨🇦 500 160 108ms 1 Sep 2024 691st LukeBridges 🇬🇧 499 142 11ms 3 Sep 2024 692nd MeWhenI 🇻🇦 499 181 2ms 13 Jun 2025 693rd rucin93 🇵🇱 494 152 3ms 8 days ago 694th HunterC14 494 155 12ms 21 Oct 2024 695th mateusz-sterczewski 493 86 36ms 15 Jan 2026 696th madex 🇩🇪 493 183 2ms 2 Sep 2024 697th codewrite 🇬🇧 492 181 427ms 30 Dec 2025 698th flekAI 490 241 1,445ms 3 days ago 699th Naitzirch 🇳🇱 485 158 11ms 3 Jul 2025 700th snoozingnewt 🇨🇦 481 185 450ms 4 Oct 2025 701st KatieLG 🇬🇧 481 292 7ms 1 Sep 2024 702nd alphafalfa 480 105 4ms 1 Nov 2024 703rd rucin93 🇵🇱 480 251 243ms 5 Sep 2024 704th snoozingnewt 🇨🇦 478 189 2ms 9 Oct 2025 705th junkondo-jp 476 149 11ms 15 Dec 2024 706th jusaka 476 263 45ms 14 hours ago 707th DialFrost 🇸🇬 472 207 501ms 24 Sep 2025 708th R4z0rX 467 152 11ms 1 Sep 2024 709th iczelia 🇩🇪 465 194 2ms 11 Oct 2025 710th Apzyte-Gamer 464 165 11ms 28 Oct 2024 711th JOrE20 460 268 28ms 11 Feb 2026 712th scpchicken 🇵🇼 457 82 6ms 2 days ago 713th snoozingnewt 🇨🇦 456 186 8ms 1 Sep 2024 714th jusaka 456 214 400ms 21 hours ago 715th two-bad 🇬🇧 455 156 11ms 4 Oct 2024 716th Shanethegamer 🇺🇸 454 141 110ms 4 Dec 2025 717th CyberTapir 453 169 10ms 1 Sep 2024 718th msbranicky 448 269 242ms 1 Sep 2024 719th flekAI 442 273 183ms 3 days ago 720th IISResetMe 439 106 406ms 3 Jan 2026 First Prev 641–720 of 858 Next Last