3.3M resistors not registering on multimeter - are they faulty?
Assuming you don't have a 20M range, put two of the identically marked 3.3M resistor in parallel on the 2M range, and you should read about 1.65M. 

The "1" with the rest of the display blank means that the resistance is too high for that range. For example, if you try to measure a 330\$\Omega\$ resistor on the 200 ohm range you'll see the same thing (with the decimal point in a different position). 

Avoid touching the leads (or touch no more than one of the connections to the multimeter leads) lest you affect the reading.