Geodesic
Carmichael Numbers with a Square Totient
Canadian mathematical bulletin, Tome 52 (2009) no. 1, pp. 3-8

Voir la notice de l'article provenant de la source Cambridge University Press

Let $\varphi$ denote the Euler function. In this paper, we show that for all large $x$ there are more than ${{x}^{0.33}}$ Carmichael numbers $n\,\le \,x$ with the property that $\varphi \left( n \right)$ is a perfect square. We also obtain similar results for higher powers.
DOI : 10.4153/CMB-2009-001-7
Mots-clés : 11N25, 11A25 
Banks, W. D. Carmichael Numbers with a Square Totient. Canadian mathematical bulletin, Tome 52 (2009) no. 1, pp. 3-8. doi: 10.4153/CMB-2009-001-7
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