PalindromemordnilaP in all languages in chars. 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 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 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 Apéry’s Constant Binary Lambda Calculus Calendar Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Multitap Input NFA Simulator 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 ><> 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 ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel 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 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 ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel 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 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 Apéry’s Constant Binary Lambda Calculus Calendar Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Multitap Input NFA Simulator 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 Chars Time Submitted 601st Mabeloid 🇳🇴 533 109 736ms 17 Sep 2024 602nd albanian-laundromat 533 352 11ms 18 Sep 2025 603rd trijin 529 118 4ms 5 Oct 2024 604th emgordon154 527 133 13ms 16 Dec 2024 605th Shanethegamer 🇺🇸 526 183 333ms 24 Sep 2025 606th Zhenyu-Bo 524 119 15ms 1 Aug 2025 607th tomh1012 523 169 346ms 17 Sep 2025 608th lhulinsky 520 120 13ms 23 Oct 2024 608th arjunarya1 520 120 14ms 11 Sep 2025 610th error256 515 134 2ms 24 Sep 2024 611th Shanethegamer 🇺🇸 512 141 107ms 2 days ago 612th CaedenHarper 🇨🇦 512 188 349ms 3 Oct 2025 613th kevinnaviapaiva 511 122 10ms 16 Feb 2025 614th eddvrs 507 123 14ms 29 Sep 2024 615th Yewzir 🇧🇪 505 115 376ms 5 days ago 616th yokasuretsu 503 124 12ms 10 Jul 2025 616th hamilton-bonds 503 124 13ms 24 Jul 2025 618th madex 🇩🇪 502 84 32ms 1 Sep 2024 619th dbut2 🇦🇺 502 261 252ms 3 Sep 2024 620th LukeBridges 🇬🇧 498 142 9ms 3 Sep 2024 621st snoozingnewt 🇨🇦 497 160 101ms 1 Sep 2024 622nd MeWhenI 🇻🇦 496 181 2ms 13 Jun 2025 623rd nhausspiegel 495 126 13ms 13 Sep 2024 624th Shanethegamer 🇺🇸 493 115 2ms 1 Sep 2024 625th matsagad 491 127 13ms 16 Jan 2025 626th madex 🇩🇪 490 183 2ms 2 Sep 2024 627th xyangst 487 128 10ms 12 Oct 2024 627th 123mjb 487 128 14ms 17 days ago 629th snoozingnewt 🇨🇦 480 120 118ms 14 Oct 2025 630th snoozingnewt 🇨🇦 478 185 356ms 4 Oct 2025 631st rucin93 🇵🇱 476 251 230ms 5 Sep 2024 632nd junkondo-jp 475 149 9ms 15 Dec 2024 633rd snoozingnewt 🇨🇦 475 189 2ms 9 Oct 2025 634th KatieLG 🇬🇧 475 292 7ms 1 Sep 2024 635th rboath 470 159 92ms 18 Dec 2024 636th janAkali 🇷🇺 470 171 332ms 17 May 2025 637th R4z0rX 466 152 9ms 1 Sep 2024 638th DialFrost 🇸🇬 465 207 337ms 24 Sep 2025 639th iczelia 🇩🇪 462 194 2ms 11 Oct 2025 640th Stockoh 🇫🇷 455 137 13ms 17 Oct 2024 641st two-bad 🇬🇧 454 156 9ms 4 Oct 2024 641st JOrE20 🇺🇸 454 156 9ms 4 days ago 643rd brimstonetrader 452 138 15ms 17 Oct 2024 644th ravnskjaer 🇩🇰 450 214 313ms 11 Sep 2024 645th msbranicky 445 269 229ms 1 Sep 2024 646th ehulinsky 🇺🇸 432 122 3ms 3 Apr 2025 647th Yax42 🇫🇷 430 224 353ms 5 Oct 2025 648th aksyristos 417 101 32ms 17 Nov 2024 649th MeWhenI 🇻🇦 411 260 73ms 13 Jun 2025 650th HunterC14 402 155 13ms 21 Oct 2024 651st bac0id 402 266 2,292ms 10 Jan 2025 652nd Jacob385 401 240 313ms 4 Sep 2024 653rd zakariamouhid 398 178 10ms 14 Sep 2024 654th galloj 🇨🇿 396 101 10ms 4 Sep 2024 655th Naitzirch 🇳🇱 395 158 12ms 3 Jul 2025 656th varhammer 🇷🇺 389 235 8ms 20 Oct 2025 657th Apzyte-Gamer 378 165 14ms 28 Oct 2024 658th CyberTapir 369 169 13ms 1 Sep 2024 659th IISResetMe 366 127 328ms 17 Nov 2024 660th Giantnoodlemonster 365 246 2ms 27 Sep 2024 661st MeWhenI 🇻🇦 363 135 6ms 26 Sep 2024 662nd rollershutter 354 176 13ms 18 Nov 2024 663rd Mikey-Beep 🇬🇧 354 193 14ms 13 Aug 2025 664th nephila-nacrea 🇬🇧 283 132 3ms 4 Sep 2024 665th AidanWalter 282 221 14ms 3 Jan 2025 666th KatieLG 🇬🇧 262 459 1,222ms 15 Sep 2024 667th timhaj 🇸🇮 261 239 15ms 19 Sep 2024 668th bidger 261 369 312ms 20 Sep 2024 669th KatieLG 🇬🇧 260 460 198ms 15 Sep 2024 670th snoozingnewt 🇨🇦 241 444 1,006ms 6 Oct 2025 671st KatieLG 🇬🇧 200 401 125ms 15 Sep 2024 672nd KatieLG 🇬🇧 176 398 7ms 15 Sep 2024 673rd KatieLG 🇬🇧 171 768 260ms 15 Sep 2024 674th KatieLG 🇬🇧 113 466 3ms 15 Sep 2024 675th Msleizak 🇫🇷 110 424 242ms 7 Feb 2025 First Prev 601–675 of 699 Next Last