Is That A Big Number?

If Time since the birth of Dante Alighieri (759 y) was a standard unit ...

Time since first humans in Europe (30,000 y)...more would be 40 x Time since the birth of Dante Alighieri

Time since extinction of Neanderthals (30,000 y)...more would be 40 x Time since the birth of Dante Alighieri

Age of earliest sewing needle (30,000 y)...more would be 40 x Time since the birth of Dante Alighieri

Time since the earliest bread baking (30,000 y)...more would be 40 x Time since the birth of Dante Alighieri

Time since first humans in Americas (15,000 y)...more would be 20 x Time since the birth of Dante Alighieri

Time since the peak of Roman Empire (1,900 y)...more would be 2.5 x Time since the birth of Dante Alighieri

Time since the birth of Marco Polo (770 y)...more would be about as big as Time since the birth of Dante Alighieri

Time since the birth of Newton (381 y)...more would be 1/2 of Time since the birth of Dante Alighieri

Lifespan of Galapagos giant tortoise (190 y)...more would be 1/4 of Time since the birth of Dante Alighieri

Time since the invention of the transistor (76 y)...more would be 1/10 of Time since the birth of Dante Alighieri

Period of Halley's Comet's orbit (75.3 y)...more would be 1/10 of Time since the birth of Dante Alighieri

Lifespan of horse (30 y)...more would be 1/25 of Time since the birth of Dante Alighieri

Time since first iPhone launched (15 y)...more would be 1/50 of Time since the birth of Dante Alighieri

Lifespan of a cat (15 y)...more would be 1/50 of Time since the birth of Dante Alighieri

Period of Mars's orbit (1.88 y)...more would be 1/400 of Time since the birth of Dante Alighieri

Yes, there's now a book based on these numbers. Oxford University Press: July 2018.