# factors
T = tera = 1e12
G = giga = 1e9
M = mega = 1e6
K = k = kilo = 1e3
c = centi = 1e-2
m = milli = 1e-3
mu = micro = 1e-6
n = nano = 1e-9
p = pico = 1e-12
f = fempto = 1e-15
a = atto = 1e-18
z = zepto = 1e-21
y = yocto = 1e-24