We all have
2 Parents
4 Grandparents
8 Great Grandparents
16 Great Great Grandparents
32 Great Great Great Grandparents
64 Great Great Great Great Grandparents
128 Great Great Great Great Great Grandparents
256 Great Great Great Great Great Great Grandparents
512 Great Great Great Great Great Great Great Grandparents
1024 Great Great Great Great Great Great Great Great Grandparents
After just ten gemeratopms!
2.048
4,096
8,192
16,284
32,586
65,136
130,272
260,544
521,088
1,042,176
And all of these in twenty generations
From "The Homesteaders Newsletter"