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GIMPS has discovered a new largest known prime number: 2^{82589933}1 (24,862,048 digits) This prime can be written as the sum of the squares of the first 77 factorials of odd numbers: (1!)^2 + (3!)^2 + (5!)^2 + ... + (149!)^2 + (151!)^2 + (153!)^2. [Earls]
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