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 🇨🇦 582 226 326ms 1 Sep 2024 642nd GeorgeStechman 🇬🇧 581 122 13ms 5 Nov 2024 642nd gigaprofisi 🇺🇸 581 122 9ms 10 Aug 2025 644th muser-logiccpu 🇺🇦 580 119 2ms 23 Jul 2025 645th dokutan 578 107 165ms 14 Feb 2026 646th xyangst 576 123 10ms 15 Oct 2024 647th JohandeRuiter 🇳🇱 576 156 2ms 2 Sep 2024 648th emgordon154 573 133 14ms 16 Dec 2024 649th vhoulbreque 🇫🇷 573 146 182ms 11 Nov 2025 650th dokutan 572 74 37ms 20 Feb 2025 651st dokutan 571 75 1,157ms 29 Aug 2025 652nd dokutan 565 132 3ms 1 Sep 2024 653rd TeodorDyakov 🇧🇬 565 159 2ms 6 Sep 2025 654th TheZwierzLF 🇵🇱 564 75 35ms 27 Dec 2025 655th HumanoidCPU 563 110 151ms 22 Nov 2025 656th emgordon154 563 113 111ms 4 Dec 2025 657th smiksky 🇺🇸 563 136 10ms 16 Oct 2024 658th tomh1012 562 126 10ms 18 Sep 2025 659th MostParsingVex 562 160 33ms 30 Sep 2024 660th Stockoh 🇫🇷 559 137 10ms 17 Oct 2024 661st RedzGoose 🇦🇺 557 145 126ms 9 Sep 2024 662nd brimstonetrader 555 138 11ms 17 Oct 2024 663rd msbranicky 552 135 3ms 1 Sep 2024 664th DialFrost 🇸🇬 539 76 1,023ms 1 Aug 2025 665th KatieLG 🇬🇧 539 128 2ms 2 Oct 2025 666th mm1013g 539 142 10ms 2 Sep 2024 667th dokutan 539 155 229ms 1 Sep 2024 668th Shanethegamer 🇺🇸 538 91 22ms 1 Sep 2024 669th snoozingnewt 🇨🇦 536 79 37ms 12 Oct 2025 670th Shanethegamer 🇺🇸 536 206 32ms 4 Sep 2024 671st albanian-laundromat 🇺🇸 533 352 11ms 18 Sep 2025 672nd trijin 532 118 4ms 5 Oct 2024 673rd Shanethegamer 🇺🇸 532 183 492ms 24 Sep 2025 674th AstroOrbis 525 145 7ms 25 Feb 2026 675th pickerj 525 146 11ms 12 Sep 2024 676th tomh1012 525 169 405ms 17 Sep 2025 677th ravnskjaer 🇩🇰 523 186 469ms 15 Dec 2025 678th CaedenHarper 🇨🇦 518 188 493ms 3 Oct 2025 679th error256 515 134 2ms 24 Sep 2024 680th dokutan 507 174 10ms 28 Feb 2026 681st rboath 506 159 97ms 18 Dec 2024 682nd dbut2 🇦🇺 504 261 337ms 3 Sep 2024 683rd snoozingnewt 🇨🇦 502 141 10ms 12 Oct 2025 684th LukeBridges 🇬🇧 499 142 13ms 3 Sep 2024 685th MeWhenI 🇻🇦 498 86 1,062ms 15 Sep 2025 686th snoozingnewt 🇨🇦 497 160 108ms 1 Sep 2024 687th MeWhenI 🇻🇦 497 181 2ms 13 Jun 2025 688th HunterC14 494 155 12ms 21 Oct 2024 689th mateusz-sterczewski 492 86 36ms 15 Jan 2026 690th rucin93 🇵🇱 491 152 3ms 33 hours ago 691st madex 🇩🇪 491 183 2ms 2 Sep 2024 692nd codewrite 🇬🇧 490 181 455ms 30 Dec 2025 693rd Naitzirch 🇳🇱 485 158 11ms 3 Jul 2025 694th alphafalfa 480 105 4ms 1 Nov 2024 695th snoozingnewt 🇨🇦 479 185 407ms 4 Oct 2025 696th rucin93 🇵🇱 479 251 243ms 5 Sep 2024 697th snoozingnewt 🇨🇦 476 189 2ms 9 Oct 2025 698th junkondo-jp 475 149 9ms 15 Dec 2024 699th KatieLG 🇬🇧 475 292 8ms 1 Sep 2024 700th DialFrost 🇸🇬 470 207 562ms 24 Sep 2025 701st R4z0rX 466 152 9ms 1 Sep 2024 702nd Apzyte-Gamer 464 165 11ms 28 Oct 2024 703rd iczelia 🇩🇪 463 194 2ms 11 Oct 2025 704th two-bad 🇬🇧 454 156 10ms 4 Oct 2024 705th CyberTapir 453 169 10ms 1 Sep 2024 706th JOrE20 453 268 28ms 11 Feb 2026 707th Shanethegamer 🇺🇸 451 141 110ms 4 Dec 2025 708th snoozingnewt 🇨🇦 449 186 8ms 1 Sep 2024 709th msbranicky 447 269 242ms 1 Sep 2024 710th IISResetMe 439 106 503ms 3 Jan 2026 711th Shanethegamer 🇺🇸 438 115 2ms 1 Sep 2024 712th rollershutter 435 176 11ms 18 Nov 2024 713th Yax42 🇫🇷 435 224 471ms 5 Oct 2025 714th ehulinsky 🇺🇸 432 122 3ms 3 Apr 2025 715th Yewzir 🇧🇪 428 179 12ms 1 Dec 2025 716th aksyristos 419 101 37ms 17 Nov 2024 717th amazingalek 🇳🇴 411 216 450ms 26 Jan 2026 718th MeWhenI 🇻🇦 411 260 77ms 13 Jun 2025 719th Jacob385 406 240 393ms 4 Sep 2024 720th bac0id 402 266 2,913ms 10 Jan 2025 First Prev 641–720 of 776 Next Last