Number Theory

    

Special Properties of the First Absolute Fermat Pseudoprime, the Number 561

Authors: Marius Coman

Though is the first Carmichael number, the number 561 doesn’t have the same fame as the third absolute Fermat pseudoprime, the Hardy-Ramanujan number, 1729. I try here to repair this injustice showing few special properties of the number 561.

Comments: 6 Pages. A list with 23 interesting properties that I found regarding the number 561, in relation with other Carmichael numbers, other Fermat pseudoprimes to base 2, with primes or other integers.

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Submission history

[v1] 2013-02-28 08:55:04

Unique-IP document downloads: 317 times

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