(2+1)(2²+1)(2^4+1)(2^8+1)…………(2^1024+1)
=(2-1)(2+1)(2²+1)(2^4+1)(2^8+1)…………(2^1024+1)
=(2²-1)(2²+1)(2^4+1)(2^8+1)…………(2^1024+1)
=(2^4-1)(2^4+1)(2^8+1)…………(2^1024+1)
=2^2048-1
(2+1)(2²+1)(2^4+1)(2^8+1)…………(2^1024+1)
=(2-1)(2+1)(2²+1)(2^4+1)(2^8+1)…………(2^1024+1)
=(2²-1)(2²+1)(2^4+1)(2^8+1)…………(2^1024+1)
=(2^4-1)(2^4+1)(2^8+1)…………(2^1024+1)
=2^2048-1