Proton: stable or unstable?

Nereid

IIRC, the experimentally observed limit on the proton's half-life is ~10³⁵ years, at least for several (one?) of the more 'likely' decay modes.

Nereid Recognitions: Gold Member Science Advisor Staff Emeritus	IIRC, the experimentally observed limit on the proton's half-life is ~10³⁵ years, at least for several (one?) of the more 'likely' decay modes.