Thanks guys!

I, too have pushed EEPROM cells to over 2M WRITES, but my military customers are interested in MTBF. If I use the "approved" tables, the
MTBF of my entire unit starts decreasing significantly if I have more
than 100K WRITES.
My plan was to write a word into two bytes, and when it overflowed,
increment another EEEPROM cell (which tells me the byte offset) and shift the WRITE up one byte.
That way, each cell would get 65536 + 256 WRITES.

I was worried that if I just shifted up one byte each time I overflowed,
I would actually be writing more times than I thought.