Before publishing and claiming my $6m, I’d probably extract, read, try to understand, and then roll around in ecstasy on the Riemann’s hypothesis proof. Because I just love me some Riemann.
Although – I might hide that proof, and not claim the $1m. The possibility of predicting primes represented by it could be the end of secure systems everywhere, and I’d rather be able to keep $5m safe than have $6m and possibly lose it all.
That, and the rolling around on it.