How many digits is the result of formula 2 (3 + 1) (32 + 1) (34 + 1) (38 + 1) (316 + 1) (332 + 1) + 1?

How many digits is the result of formula 2 (3 + 1) (32 + 1) (34 + 1) (38 + 1) (316 + 1) (332 + 1) + 1?

2(3+1)(3^2+1)(3^4+1)(3^8+1)(3^16+1)(3^32+1)+1
=(3-1)(3+1)(3²+1)(3^4+1)(3^8+1)(3^16+1)(3^32+1)+1
=(3²-1)(3²+1)(3^4+1)(3^8+1)(3^16+1)(3^32+1)+1
=(3^4-1)(3^4+1)(3^8+1)(3^16+1)(3^32+1)+1
=(3^8-1)(3^8+1)(3^16+1)(3^32+1)+1
=(3^16-1)(3^16+1)(3^32+1)+1
=(3^32-1)(3^32+1)+1
=3^64-1+1
=3 ^ 64 = 9 ^ 32 = 81 ^ 16 bits are 1