It is 88 which can also be written as 8^8 if superscripts are not supported.
8 to the power of 8 = 8x8x8x8x8x8x8x8 and does not equal 1 but 1 to the power of 8 does equal 1
It is written as: 88 meaning 8 to the power of 8 (8x8x8x8x8x8x8x8=) On older computers, often without a superscript key: 8^8 means the same.