It is

#### (2^{82,589,933} ā 1)( 2^{82,589,932})

The formula for PERFECT numbers is P = (2nā 1)( 2n-1) providing

(2^{n}ā 1) is a prime.

The last digit of the largest known PERFECT number

should be 1 x 6 = 6. It is!! All PERFECT numbers end is 6 or 8.