Largest known semiprime

The largest known is equal to \((2^{82,589,933} − 1)^2 = 2^{165,179,866}-2^{82,589,934}+1 \approx 2.216956 \times 10^{49,724,094}\); it is the square of the largest known prime.
== Approximations ==
== Sources ==
Category:Numbers
Category:Class 3
Category:Numerical records
Category:Powers of multi-digit primes
Category:Lower class 3
Category:Dynamic googolisms