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 muser-logiccpu 🇺🇦 582 119 2ms 23 Jul 2025 642nd GeorgeStechman 🇬🇧 581 122 13ms 5 Nov 2024 642nd gigaprofisi 🇺🇸 581 122 9ms 10 Aug 2025 644th flekAI 580 73 38ms 3 days ago 645th JohandeRuiter 🇳🇱 579 156 2ms 2 Sep 2024 646th dokutan 578 107 165ms 14 Feb 2026 647th xyangst 577 123 10ms 15 Oct 2024 648th emgordon154 577 133 14ms 16 Dec 2024 649th vhoulbreque 🇫🇷 577 146 182ms 11 Nov 2025 650th dokutan 574 75 1,157ms 29 Aug 2025 651st dokutan 573 74 37ms 20 Feb 2025 652nd TeodorDyakov 🇧🇬 568 159 2ms 6 Sep 2025 653rd emgordon154 566 113 111ms 4 Dec 2025 654th TheZwierzLF 🇵🇱 565 75 35ms 27 Dec 2025 655th dokutan 565 132 3ms 1 Sep 2024 656th MostParsingVex 564 160 27ms 30 Sep 2024 657th HumanoidCPU 563 110 151ms 22 Nov 2025 658th tomh1012 563 126 10ms 18 Sep 2025 659th smiksky 🇺🇸 563 136 10ms 16 Oct 2024 660th RedzGoose 🇦🇺 563 145 126ms 9 Sep 2024 661st Stockoh 🇫🇷 559 137 10ms 17 Oct 2024 662nd flekAI 558 127 10ms 3 days ago 663rd brimstonetrader 555 138 11ms 17 Oct 2024 664th msbranicky 552 135 3ms 1 Sep 2024 665th jusaka 550 40 46ms 5 hours ago 666th dokutan 544 155 220ms 1 Sep 2024 667th Shanethegamer 🇺🇸 542 206 32ms 4 Sep 2024 668th KatieLG 🇬🇧 541 128 2ms 2 Oct 2025 669th DialFrost 🇸🇬 539 76 1,023ms 1 Aug 2025 670th mm1013g 539 142 10ms 2 Sep 2024 671st Shanethegamer 🇺🇸 538 91 22ms 1 Sep 2024 672nd snoozingnewt 🇨🇦 536 79 37ms 12 Oct 2025 673rd trijin 534 118 6ms 5 Oct 2024 674th Shanethegamer 🇺🇸 534 183 492ms 24 Sep 2025 675th albanian-laundromat 🇺🇸 533 352 11ms 18 Sep 2025 676th AstroOrbis 529 145 7ms 25 Feb 2026 677th tomh1012 527 169 405ms 17 Sep 2025 678th pickerj 525 146 11ms 12 Sep 2024 679th ravnskjaer 🇩🇰 525 186 469ms 15 Dec 2025 680th CaedenHarper 🇨🇦 520 188 493ms 3 Oct 2025 681st error256 517 134 2ms 24 Sep 2024 682nd rboath 513 159 97ms 18 Dec 2024 683rd dokutan 507 174 13ms 28 Feb 2026 684th dbut2 🇦🇺 507 261 337ms 3 Sep 2024 685th snoozingnewt 🇨🇦 503 141 10ms 12 Oct 2025 686th MeWhenI 🇻🇦 500 86 1,062ms 15 Sep 2025 687th snoozingnewt 🇨🇦 500 160 108ms 1 Sep 2024 688th LukeBridges 🇬🇧 499 142 13ms 3 Sep 2024 689th MeWhenI 🇻🇦 499 181 2ms 13 Jun 2025 690th HunterC14 494 155 12ms 21 Oct 2024 691st mateusz-sterczewski 493 86 36ms 15 Jan 2026 692nd madex 🇩🇪 493 183 2ms 2 Sep 2024 693rd codewrite 🇬🇧 492 181 430ms 30 Dec 2025 694th rucin93 🇵🇱 491 152 3ms 8 days ago 695th flekAI 490 241 1,445ms 2 days ago 696th Naitzirch 🇳🇱 485 158 11ms 3 Jul 2025 697th snoozingnewt 🇨🇦 481 185 407ms 4 Oct 2025 698th alphafalfa 480 105 4ms 1 Nov 2024 699th rucin93 🇵🇱 480 251 243ms 5 Sep 2024 700th snoozingnewt 🇨🇦 478 189 2ms 9 Oct 2025 701st junkondo-jp 476 149 9ms 15 Dec 2024 702nd KatieLG 🇬🇧 475 292 7ms 1 Sep 2024 703rd DialFrost 🇸🇬 472 207 501ms 24 Sep 2025 704th R4z0rX 467 152 9ms 1 Sep 2024 705th iczelia 🇩🇪 465 194 2ms 11 Oct 2025 706th Apzyte-Gamer 464 165 11ms 28 Oct 2024 707th scpchicken 🇵🇼 457 82 6ms 41 hours ago 708th JOrE20 457 268 28ms 11 Feb 2026 709th jusaka 456 214 400ms 3 hours ago 710th two-bad 🇬🇧 455 156 10ms 4 Oct 2024 711th Shanethegamer 🇺🇸 454 141 110ms 4 Dec 2025 712th CyberTapir 453 169 10ms 1 Sep 2024 713th snoozingnewt 🇨🇦 453 186 8ms 1 Sep 2024 714th msbranicky 448 269 242ms 1 Sep 2024 715th flekAI 442 273 183ms 2 days ago 716th IISResetMe 439 106 438ms 3 Jan 2026 717th Shanethegamer 🇺🇸 438 115 2ms 1 Sep 2024 718th Yax42 🇫🇷 436 224 471ms 5 Oct 2025 719th rollershutter 435 176 11ms 18 Nov 2024 720th ehulinsky 🇺🇸 432 122 3ms 3 Apr 2025 First Prev 641–720 of 831 Next Last