Publication year 1975 First terms 24, 2016, 8190 | Largest known term 1371332329173024768 | |
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In number theory, an Erdős–Nicolas number is a number that is not perfect, but that equals one of the partial sums of its divisors. That is, a number n is Erdős–Nicolas number when there exists another number m such that
The first ten Erdős–Nicolas numbers are
24, 2016, 8190, 42336, 45864, 392448, 714240, 1571328, 61900800 and 91963648. ( A194472)They are named after Paul Erdős and Jean-Louis Nicolas, who wrote about them in 1975.
References
Erdős–Nicolas number Wikipedia(Text) CC BY-SA