A prefix indicating 1015; a quadrillion.

(P) = thousand million million = 1,000,000,000,000,000 = 10 15 (see Micros, Millis, Megas and Measurements)

Unit qualifier (symbol = T) representing one thousand million million, or 1015. For example, 3PHz stands for 3 x 1015 Hertz.

Prefix meaning "thousand million million" (see kilo-).

Thousand million million = 1,000,000,000,000,000 = 1015

Abbreviated P. A prefix meaning 1 quadrillion (base 10 to the power of 15). In computing, which is based on the binary (base-2) numbering system, peta- has a literal value of 1,125,899,906,842,624, which is the power of two (base 2 to the power 50) closest to 1 quadrillion.

A prefix that indicates a factor 1015, abbreviated as "P."

10^15 power. A petaflop is a thousand trillion floating point operations per second, or a thousand teraflops.

A prefix meaning 1015 or 1,000,000,000,000,000

means one quadrillion (a thousand trillions, or one with 15 zeros). PJ is the abbreviation for petajoules.