On the 117-th Smarandache’s problem

K. Atanassov
Notes on Number Theory and Discrete Mathematics, ISSN 1310-5132
Volume 5, 1999, Number 3, Pages 97—98
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Authors and affiliations

K. Atanassov
CLBME – Bulg. Academy of Sci.,
P.O. Box 12, Sofia-1113, Bulgaria

References

1. Dumitrescu C., Seleacu V., Problem 117. Some Notions and Questions in Number Theory. Erhus Univ. Press, Glendale, 1994.
2. Nagell T., Introduction to Number Theory. John Wiley Sc Sons, Inc., New York, 1950.
3. Ribenboim R., The book of Prime Number Records, Springer-Verlag, New York, 1989