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(5+1)(52+1)(54+1)(58+1)(516+1)(532+1)
=6×53×55×59×517×533
=2843 5415 1510
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﹙5+1﹚×﹙5²+1﹚×﹙5⁴+1﹚×﹙5^8+1﹚×﹙5^16+1﹚×﹙5^32+1﹚
=﹙5-1﹚×﹙5+1﹚×﹙5²+1﹚×﹙5⁴+1﹚×﹙5^8+1﹚×﹙5^16+1﹚×﹙5^32+1﹚÷﹙5-1﹚
=﹙5²-1﹚×﹙5²+1﹚×﹙5⁴+1﹚×﹙5^8+1﹚×﹙5^16+1﹚×﹙5^32+1﹚÷4
=﹙5⁴-1﹚×﹙5⁴+1﹚×﹙5^8+1﹚×﹙5^16+1﹚×﹙5^32+1﹚÷4
=﹙5^8-1﹚×﹙5^8+1﹚×﹙5^16+1﹚×﹙5^32+1﹚÷4
=﹙5^16-1﹚×﹙5^16+1﹚×﹙5^32+1﹚÷4
=﹙5^32-1﹚×﹙5^32+1﹚÷4
=﹙5^64-1﹚÷4
=﹙5^64-1﹚/4
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284 354 151 510
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