In 1752 Goldbach conjectured that every odd integer can be written in the form p + 2a^2, where p is unity or a prime and a is allowed to be zero.
This conjecture is found to be false - there are only two known composite exceptions, 5777 (=53*109) being one of them.

Please find the other, it is below 99,999.

The other composite exception is 5993

Posted by K Sengupta on 2022-03-15 02:44:15