SI Units PrefixesOnline version This matching game features the prefix name, symbol and the factor. by Edwin Rieza 1 mega 2 giga 3 tera 4 milli 5 micro 6 nano 7 pico mega M 10^6 giga G 10^9 tera T 10^12 milli m 10^-3 micro μ 10^-6 nano n 10^-9 pico p 10^-12