Time since building of the Great Pyramid of Giza / Cheops / Khufu

Time since building of the Great Pyramid of Giza / Cheops / Khufu (4,580 y)

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Neat Ratios ...

Time since building of the Great Pyramid of Giza / Cheops / Khufu (4,580 y)

is 1/5000 of Time since the end of the Paleogene geologic period (23 million y)...more
is 2/5 of Time since the earliest farming (11,500 y)...more
is 2 x Time since the birth of Archimedes (2,300 y)...more
is 2 x Time since the birth of Eratosthenes (2,299 y)...more
is 2 x Time since start of building of the Great Pyramid of Cholula (2,250 y)...more
is 2.5 x Time since the birth of Diophantus (1,814 y)...more
is 2.5 x Time since the building of Great Wall of China (1,800 y)...more
is 5 x Time since building of Angkor Wat (905 y)...more
is 10 x Time since the birth of Shakespeare (460 y)...more
is 10 x Time since the birth of Galileo (457 y)...more
is 40 x Time since first Model T Ford launched (116 y)...more
is 40 x Time since the birth of chemist Dorothy Hodgkin (114 y)...more
is 1000 x Period of Ceres's orbit (4.6 y)...more

If this was a standard unit ...