6(7+1)(7^2+1)(7^4+1)(7^8+1)(7^16+1)+1
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6(7+1)(7^2+1)(7^4+1)(7^8+1)(7^16+1)+1
=(7-1)(7+1)(7^2+1)(7^4+1)(7^8+1)(7^16+1)+1
=(7^2-1)(7^2+1)(7^4+1)(7^8+1)(7^16+1)+1
=(7^4-1)(7^4+1)(7^8+1)(7^16+1)+1
=(7^8-1)(7^8+1)(7^16+1)+1
=(7^16-1)(7^16+1)+1
=7^32-1+1
=7^32
=(7-1)(7+1)(7^2+1)(7^4+1)(7^8+1)(7^16+1)+1
=(7^2-1)(7^2+1)(7^4+1)(7^8+1)(7^16+1)+1
=(7^4-1)(7^4+1)(7^8+1)(7^16+1)+1
=(7^8-1)(7^8+1)(7^16+1)+1
=(7^16-1)(7^16+1)+1
=7^32-1+1
=7^32
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