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 dokutan 578 107 142ms 14 Feb 2026 642nd xyangst 576 123 9ms 15 Oct 2024 643rd JohandeRuiter 🇳🇱 576 156 2ms 2 Sep 2024 644th emgordon154 573 133 14ms 16 Dec 2024 645th vhoulbreque 🇫🇷 573 146 196ms 11 Nov 2025 646th dokutan 572 74 37ms 20 Feb 2025 647th dokutan 571 75 1,157ms 29 Aug 2025 648th TeodorDyakov 🇧🇬 565 159 2ms 6 Sep 2025 649th TheZwierzLF 🇵🇱 564 75 35ms 27 Dec 2025 650th HumanoidCPU 563 110 158ms 22 Nov 2025 651st emgordon154 563 113 111ms 4 Dec 2025 652nd smiksky 🇺🇸 563 136 10ms 16 Oct 2024 653rd tomh1012 562 126 10ms 18 Sep 2025 654th MostParsingVex 562 160 33ms 30 Sep 2024 655th dokutan 561 132 3ms 1 Sep 2024 656th Stockoh 🇫🇷 559 137 11ms 17 Oct 2024 657th RedzGoose 🇦🇺 557 145 101ms 9 Sep 2024 658th brimstonetrader 555 138 10ms 17 Oct 2024 659th msbranicky 548 135 3ms 1 Sep 2024 660th DialFrost 🇸🇬 539 76 1,023ms 1 Aug 2025 661st KatieLG 🇬🇧 539 128 2ms 2 Oct 2025 662nd mm1013g 539 142 10ms 2 Sep 2024 663rd dokutan 539 155 242ms 1 Sep 2024 664th Shanethegamer 🇺🇸 538 91 22ms 1 Sep 2024 665th snoozingnewt 🇨🇦 536 79 37ms 12 Oct 2025 666th Shanethegamer 🇺🇸 536 206 32ms 4 Sep 2024 667th albanian-laundromat 533 352 11ms 18 Sep 2025 668th trijin 532 118 4ms 5 Oct 2024 669th Shanethegamer 🇺🇸 532 183 492ms 24 Sep 2025 670th AstroOrbis 525 145 7ms 25 Feb 2026 671st pickerj 525 146 11ms 12 Sep 2024 672nd tomh1012 525 169 405ms 17 Sep 2025 673rd ravnskjaer 🇩🇰 523 186 478ms 15 Dec 2025 674th CaedenHarper 🇨🇦 518 188 493ms 3 Oct 2025 675th error256 515 134 2ms 24 Sep 2024 676th dokutan 507 174 10ms 28 Feb 2026 677th rboath 506 159 97ms 18 Dec 2024 678th dbut2 🇦🇺 504 261 275ms 3 Sep 2024 679th snoozingnewt 🇨🇦 502 141 9ms 12 Oct 2025 680th LukeBridges 🇬🇧 499 142 10ms 3 Sep 2024 681st MeWhenI 🇻🇦 498 86 1,062ms 15 Sep 2025 682nd snoozingnewt 🇨🇦 497 160 110ms 1 Sep 2024 683rd MeWhenI 🇻🇦 497 181 2ms 13 Jun 2025 684th HunterC14 494 155 10ms 21 Oct 2024 685th mateusz-sterczewski 492 86 36ms 15 Jan 2026 686th madex 🇩🇪 491 183 2ms 2 Sep 2024 687th codewrite 🇬🇧 490 181 455ms 30 Dec 2025 688th Naitzirch 🇳🇱 485 158 10ms 3 Jul 2025 689th alphafalfa 480 105 4ms 1 Nov 2024 690th snoozingnewt 🇨🇦 479 185 407ms 4 Oct 2025 691st rucin93 🇵🇱 478 251 243ms 5 Sep 2024 692nd snoozingnewt 🇨🇦 476 189 2ms 9 Oct 2025 693rd junkondo-jp 475 149 9ms 15 Dec 2024 694th KatieLG 🇬🇧 475 292 8ms 1 Sep 2024 695th DialFrost 🇸🇬 470 207 566ms 24 Sep 2025 696th R4z0rX 466 152 9ms 1 Sep 2024 697th Apzyte-Gamer 464 165 10ms 28 Oct 2024 698th iczelia 🇩🇪 463 194 2ms 11 Oct 2025 699th two-bad 🇬🇧 454 156 11ms 4 Oct 2024 700th CyberTapir 453 169 10ms 1 Sep 2024 701st JOrE20 453 268 28ms 11 Feb 2026 702nd Shanethegamer 🇺🇸 451 141 110ms 4 Dec 2025 703rd snoozingnewt 🇨🇦 449 186 8ms 1 Sep 2024 704th msbranicky 446 269 242ms 1 Sep 2024 705th IISResetMe 439 106 503ms 3 Jan 2026 706th Shanethegamer 🇺🇸 438 115 2ms 1 Sep 2024 707th rollershutter 435 176 10ms 18 Nov 2024 708th Yax42 🇫🇷 435 224 471ms 5 Oct 2025 709th ehulinsky 🇺🇸 432 122 3ms 3 Apr 2025 710th Yewzir 🇧🇪 428 179 11ms 1 Dec 2025 711th aksyristos 419 101 37ms 17 Nov 2024 712th amazingalek 🇳🇴 411 216 450ms 26 Jan 2026 713th MeWhenI 🇻🇦 411 260 81ms 13 Jun 2025 714th Jacob385 406 240 393ms 4 Sep 2024 715th bac0id 402 266 3,003ms 10 Jan 2025 716th zakariamouhid 398 178 11ms 14 Sep 2024 717th galloj 🇨🇿 396 101 10ms 4 Sep 2024 718th varhammer 379 235 8ms 20 Oct 2025 719th Yewzir 🇧🇪 371 171 620ms 1 Dec 2025 720th nemoyatpeace 368 208 10ms 16 Jan 2026 First Prev 641–720 of 771 Next Last