(6*1)(6+1)(6^2+1)(6^4+1)(6^8+1)-6^16-12
= (6)(7)(37)(1297)(16777217) - 16777216 - 12
= 175250053749437587933749 - 16777216 - 12
= 175250053749437587917521.
(6*1)(6+1)(6^2+1)(6^4+1)(6^8+1)-6^16-12
= (6)(7)(37)(1297)(16777217) - 16777216 - 12
= 175250053749437587933749 - 16777216 - 12
= 175250053749437587917521.