Ultra-high Energy Cosmic Ray

You have: mega ton tnt
You want: eV
	* 2.6114477e+34

Could a single very high energy proton wipe out an entire city? The highest energy cosmic ray ever recorded (the Fly's Eye Event) was 3.2e20 eV, so we are still 14 orders of magnitude away.

You have: 3.2e20 eV
You want: mg tnt
        * 11.116406