1398023584459
This number is a prime.
139 8023584459
Jacobi and Madden proved that there are infinitely many
solutions for the equation a4 +
b4 +
c4 +
d4 =
(a+b+c+d)4. In July 2009, Seiji
Tomita found the following solution by using their method:
10581030818104 +
5359458113344 +
(-1140105961325)4 +
9440806526404 =
13980235844594. [Capelle]
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