If Time since building of the Great Pyramid of Giza / Cheops / Khufu (4,580 y) was a standard unit ...
Time since the end of the Paleogene geologic period (23 million y)...more would be 5000 x Time since building of the Great Pyramid of Giza / Cheops / Khufu
Time since the earliest farming (11,500 y)...more would be 2.5 x Time since building of the Great Pyramid of Giza / Cheops / Khufu
Time since the birth of Archimedes (2,300 y)...more would be 1/2 of Time since building of the Great Pyramid of Giza / Cheops / Khufu
Time since the birth of Eratosthenes (2,299 y)...more would be 1/2 of Time since building of the Great Pyramid of Giza / Cheops / Khufu
Time since start of building of the Great Pyramid of Cholula (2,250 y)...more would be 1/2 of Time since building of the Great Pyramid of Giza / Cheops / Khufu
Time since the birth of Diophantus (1,814 y)...more would be 2/5 of Time since building of the Great Pyramid of Giza / Cheops / Khufu
Time since the building of Great Wall of China (1,800 y)...more would be 2/5 of Time since building of the Great Pyramid of Giza / Cheops / Khufu
Time since building of Angkor Wat (905 y)...more would be 1/5 of Time since building of the Great Pyramid of Giza / Cheops / Khufu
Time since the birth of Shakespeare (460 y)...more would be 1/10 of Time since building of the Great Pyramid of Giza / Cheops / Khufu
Time since the birth of Galileo (457 y)...more would be 1/10 of Time since building of the Great Pyramid of Giza / Cheops / Khufu
Time since first Model T Ford launched (116 y)...more would be 1/40 of Time since building of the Great Pyramid of Giza / Cheops / Khufu
Time since the birth of chemist Dorothy Hodgkin (114 y)...more would be 1/40 of Time since building of the Great Pyramid of Giza / Cheops / Khufu
Period of Ceres's orbit (4.6 y)...more would be 1/1000 of Time since building of the Great Pyramid of Giza / Cheops / Khufu
Is That A Big Number? - The Book
Yes, there's now a book based on these numbers. Oxford University Press: July 2018.
