World!OfNumbers |
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In this well-filled website you'll find a variety of facts and figures order. It is an amalgamation of randomly gathered numbers, curios, puzzles, palindromes, primes, gems, your much valued contributions and more general information. For old time's sake my material, split up in manageable chuncks, is presented on a silver plate (of course I'm refering here to the background color!) just as the various menu's you are familiar with and which are always at your disposal further on. Enjoy! | |||||||||||

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- borderprp.htm Border PRP's around 'Powers of ten'
- borderprp(30000-34999).txt Table in text format from 30000 to 34999
- borderprp(35000-99999).txt Table in text format from 35000 to 99999
- Two PDF files provided by Norman Luhn:
- Largest-n-digit-prp.pdf A packed list of all PRP's of the form 10
^{n}– d up to 30000 - Smallest-n-digit-prp.pdf A packed list of all PRP's of the form 10
^{n}+ d up to 30000
- intro.htm Introduction to palindromes
- weblinks.htm Some thematic websources
- palrecs.htm Various palindromic number records
- triangle.htm Palindromic triangulars
- beautiful.htm The most beautiful palindromic triangular
- alltria.htm Exhaustive list of palindromic triangulars
- subtria.htm Subsets of palindromic triangulars
- detail_A.htm Details Part A from [1] to [49]
- detail_B.htm Details Part B from [50] to [99]
- detail_C.htm Details Part C from [100] to [149]
- tetra.htm Palindromic tetrahedrals
- tedet.htm Details of palindromic tetrahedrals
- square.htm Palindromic squares
- allsquar.htm Exhaustive list of palindromic squares up to length 31
- allsquar2.htm List of palindromic squares from length 32
- subsquar.htm Subsets of palindromic squares
- sqdet.htm Details of palindromic squares
- exosquar.htm Extraordinary squares and powers (non-palindromic allowed)
- cube.htm Palindromic cubes
- cubdet.htm Details of palindromic cubes
- centered.htm [
*New*] Centered Palindromic Polygonals - circular.htm Circular primes
- palpri.htm Palindromic primes overview
- palprim1.htm Palindromic primes page 1
- palprim2.htm Palindromic primes page 2
- palprim3.htm Palindromic primes page 3
- palprim4.htm Palindromic primes page 4
- palprim5.htm Palindromic primes page 5
- judpalpri.htm Assignment 2
- assign3.htm Assignment 3
- bonham.htm Palprimes where the sum over all digits is a minimum
- bonham2.htm Multiple Palprimes "Four in a row"
- undulat.htm Smoothly Undulating Palindromic Primes - SUPP's
- suppsorted.htm SUPP's - Sorted By Length
- wing.htm Palindromic Wing Primes - PWP's
- pwpsorted.htm PWP's - Sorted By Length
- deplat.htm Plateau and Depression Primes - PDP's
- pdpsorted.htm PDP's - Sorted By Length
- facpdp131.htm PDP's - Factorizations of 133...331
- facpdp313.htm PDP's - Factorizations of 311...113
- merlon.htm Palindromic Merlon Primes - PMP's
- pmpsorted.htm PMP's - Sorted By Length
- consec.htm Palindromic pronic numbers of the form n(n+1)
- quapron.htm Palindromic quasipronic numbers of the form n(n+2)
- consemor.htm Palindromic quasipronics of the form n(n+X)
- squadd1.htm Palindromic incremented squares of the form n^2+1
- squaddn.htm Palindromic incremented squares of the form n^2+X
- squdecn.htm [
*Updating*] Palindromic decremented squares of the form n^2–X - quasisq.htm Palindromic quasi_over_squares of the form n^2+(n+1)
- quadet.htm The details
- quasimor.htm [
*Updating*] Palindromic quasi_over_squares of the form n^2+(n+X) - sumsquare.htm Palindromic sums of squares of consecutive integers
- pocosupa.htm Powers of Consecutives Summing to Palindromes
- sumcube.htm Palindromic sums of cubes of consecutive integers
- sumprime.htm Palindromic sums of powers of consecutive primes
- sumpower.htm Palindromic quasi_under_squares of the form n+(n+1)^2
- varipal.htm Various palindromic sumpatterns
- firstpal.htm Sum of first n 'type of numbers' is palindromic
- sequenc.htm More palindromic products of integer sequences
- reversal.htm Palindromic products of nonpalindromic integers and their reversals
- pythago.htm Palindromic Pythagorean triples
- nobase10.htm Palindromic numbers beyond base 10
- palconca.htm Palindromic subsets of concatenated sequences
- ninedigits.htm The nine digits most recent page
- ninedig5.htm The nine digits page 5
- ninedig4.htm The nine digits page 4
- ninedig3.htm The nine digits page 3
- ninedig2.htm The nine digits page 2
- ninedig1.htm The nine digits page 1
- abreu.htm John Abreu's palindrome puzzle (wonplate 49)
- twonine.htm Palindromic products of two ninedigital numbers
- twopan.htm Palindromic products of two pandigital numbers
- propan3.txt List of palindromes as products of two pandiagonals
- penta.htm Palindromic pentagonals
- pendet.htm Factorization of the palindromic pentagonals
- hexa.htm Palindromic hexagonals
- hexdet.htm Factorization of the palindromic hexagonals
- hepta.htm Palindromic heptagonals
- hepdet.htm Factorization of the palindromic heptagonals
- octa.htm Palindromic octagonals
- ocdet.htm Factorization of the palindromic octagonals
- nona.htm Palindromic nonagonals
- nondet.htm Factorization of the palindromic nonagonals
- Prime factors of ...
- topic1.htm Home Primes -
- Repeated factorisation of concatenated prime factors of the composites
- factorlist.htm [
*Updated*] the concatenated numbers from Sm1 up to Sm200 - revfact.htm the reversed concatenated numbers from Rsm1 up to Rsm200
- repunits.htm the repunits from R1 up to R100
- year2002.htm Facts and figures about 2002 the last palindromic year
- yearmmii.htm Facts and figures about 2002 continued...
- truncat.htm List of the 4260 left-truncatable primes
- threedigits.htm Squares containing at most three distinct digits
- crump.htm Finding Tridigital Squares using the 'Quadratic Residues' technique
- samedigits.htm Numbers whose digits occur with same frequency + Classific. P2
- class_P3.htm Classification P3
- class_P4.htm Classification P4
- class_P5.htm Classification P5
- trisopf.htm Sets of 3 composites in bidirectional SOPF progression/retrogression
- pictures.htm Some (not so) recent photographs of the editor of this website
- mpjscalc.htm Multiple precision JavaScript calculator
- isolatin.htm Iso Latin I character set
- colors.htm All the 140 colourful exotic color names
- comments.htm Fill_In Form for Comments and Suggestions
- whatsnew.htm What was new in my website ?
- arch_new_2002.htm Whatsnew? archive of 2002
- arch_new_2001.htm Whatsnew? archive of 2001
- arch_new_2000.htm Whatsnew? archive of 2000
- brierproject.htm The Prime Brier Brothers Project
- search.htm Pop Up from this 'homepage'
- bennett.htm Pop Up from 'square.htm' & WONplate 74
- dna.htm Pop Up from WONplate 17
- huen.htm Pop Up from WONplate 17
- sedo.htm Pop Up from WONplate 16
- wilson.htm Pop Up from 'square.htm'
- borderprp.htm Border PRP's around 'Powers of ten'
- borderprp(00000-04999).txt Table in text format from 00000 to 04999 ( complete )
- borderprp(05000-09999).txt Table in text format from 05000 to 09999 ( complete )
- borderprp(10000-14999).txt Table in text format from 10000 to 14999 ( complete )
- borderprp(15000-19999).txt Table in text format from 15000 to 19999 ( complete )
- borderprp(20000-24999).txt Table in text format from 20000 to 24999 ( complete )
- borderprp(25000-29999).txt Table in text format from 25000 to 29999 ( complete )
- Largest-n-digit-prp.pdf A packed list of all PRP's of the form 10^n – d up to 30000
- Smallest-n-digit-prp.pdf A packed list of all PRP's of the form 10^n + d up to 30000
- borderprp(30000-34999).txt Table in text format from 30000 to 34999
- borderprp(35000-99999).txt Table in text format from 35000 to 99999
- megaprp.htm Search for the first PRP megaprime of the form 10
^{999999}+ y. - outputdata1.htm Output data of 10^999999 + y (y < 500000 )
- doublecheck.htm Doublechecking PRP candidates
- palsumpow.htm Worksheet - Palindromic Sums of Powers
- seq197.htm Worksheet - Sequence from Wonplate 197
- appending 1s to n.txt Worksheet from Wonplate 197
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Integer Sequences To look up a number sequence in Sloane's | |||||||||||

To list all OEIS submissions from Patrick De Geest To list all OEIS sequences with keywords Palindrome or Palindromic | |||||||||||

Prime Curios! Prime Puzzles The Digits Project Richard Phillips What's Special About This Number? The Zero Saga Numberland 1-100 Le Nombre 0 Nombre zéro et toutes les connotations associées Wikipedia 0 (number) |

[ TOP OF PAGE] Patrick De Geest - Belgium - Short Bio - Some Pictures E-mail address : pdg@worldofnumbers.com |