0 ▁multip lier , ▁which ▁causes ▁a ▁change ▁of ▁prefix . ▁For ▁example , ▁ 1 , 0 9 9 , 5 1 1 , 6 2 7 , 7 7 6 ▁bytes ▁= ▁ 1 ▁ter aby te ▁( or ▁te bib y te ). ▁ ▁This ▁number ▁has ▁no ▁special ▁significance ▁to ▁computers , ▁but ▁is ▁important ▁to ▁humans ▁because ▁we ▁make ▁use ▁of ▁powers ▁of ▁ten . ▁▁ 2 5 0 ▁= ▁ 1 , 1 2 5 , 8 9 9 , 9 0 6 , 8 4 2 , 6 2 4 ▁ ▁The ▁binary ▁approximation ▁of ▁the ▁p eta -, ▁or ▁ 1 , 0 0 0 , 0 0 0 , 0 0 0 , 0 0 0 , 0 0 0 ▁multip lier . ▁ 1 , 1 2 5 , 8 9 9 , 9 0 6 , 8 4 2 , 6 2 4 ▁bytes ▁= ▁ 1 ▁pet aby te ▁( or ▁p eb ib y te ). ▁▁ 2 5 3 ▁= ▁ 9 , 0 0 7 , 1 9 9 , 2 5 4 , 7 4 0 , 9 9 2 ▁ ▁The ▁number ▁until ▁which ▁all ▁integer ▁values ▁can ▁exactly ▁be ▁represented ▁in ▁IE EE ▁double ▁precision ▁floating - point ▁format . ▁▁ 2 5 6 ▁= ▁ 7 2 , 0 5 7 , 5 9 4 , 0 3 7 , 9 2 7 , 9 3 6 ▁ ▁The ▁number ▁of ▁different ▁possible ▁keys