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Cubes as factorials' sum (Posted on 2018-06-23) Difficulty: 3 of 5
How many perfect cubes below 10^6 can be expressed as the sum of two or more unique integer factorials ?

List them all.

Examples: 2!+3!=8; 1!+2!+4!=27.

Rem: 0! is not allowed.

See The Solution Submitted by Ady TZIDON    
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  Subject Author Date
computer searchSteven Lord2018-06-23 10:14:22
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