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URN to cite this document: urn:nbn:de:bvb:703-epub-5912-8
Title data
Geißer, Michael ; Körner, Theresa ; Kurz, Sascha ; Zahn, Anne:
Squares with three digits.
Bayreuth
,
2021
. - 42 S.
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Abstract
We consider integers whose squares have just three decimal digits. Examples are e.g. given by 2108436491907081488939581538<sup>2</sup> = 4445504440405440505004450045555054500055550554550445444 and 10100000000010401000000000101<sup>2</sup> = 102010000000210100200000110221001000002101002000000010201. The aim of this paper is to summarize the current knowledge on squares with three digits, scattered around webpages and newsgroup postings, and to add a few new insights. While we will mostly focus on the base B=10, several results are presented for general values of B. The used mathematical tools are completely elementary. However, we give complete proofs of all statements or explicitly state them as conjectures.
Further data
| Item Type: | Preprint, postprint |
|---|---|
| Keywords: | radix representation; digital problems; squares; recreational mathematics |
| Subject classification: | Mathematics Subject Classification Code: 11A63 (00A08) |
| DDC Subjects: | 000 Computer Science, information, general works > 004 Computer science 500 Science > 510 Mathematics |
| Institutions of the University: | Faculties > Faculty of Mathematics, Physics und Computer Science Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Mathematics Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Mathematics > Chair Mathematical Economics Faculties |
| Language: | English |
| Originates at UBT: | Yes |
| URN: | urn:nbn:de:bvb:703-epub-5912-8 |
| Date Deposited: | 02 Dec 2021 07:33 |
| Last Modified: | 02 Dec 2021 12:53 |
| URI: | https://epub.uni-bayreuth.de/id/eprint/5912 |
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