Factor Name
10^24 yotta
10^21 zetta
10^18 exa
10^15 peta
10^12 tera
10^9 giga
10^6 mega
10^3 kilo
10^2 hecto
10^1 deka
10^-1 deci
10^-2 centi
10^-3 milli
10^-6 micro
10^-9 nano
10^-12 pico
10^-15 femto
10^-18 atto
10^-21 zepto
10^-24 yocto
There should also be names for
10^51
10^48
10^45
10^42
10^39
10^36
10^33
10^30
10^-27
10^-30
10^-33
Planck's constant is 6.6 X 10^-34
Kardashev scale
Kardashev's original definition for a Kardashev 3 civilization was 4 × 10^37 Watts
A galactic scale civilization could have 10^50 simulated human minds
The upper bound should have names up to 10^123 or even higher.
Large numbers go up to 10^123
10^123 Quadragintillion, Thousand vigintillion, Vigintilliard
The number of atoms in 120 kg of carbon-12 would be simplified from 6,000 yottaatoms to 6 hellaatoms. Similarly, the sun (mass of 2.2 hellatons) would release energy at 0.3 hellawatts, rather than 300 yottawatts
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