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(just those submitted by Dobb)
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GIMPS has discovered a new largest known prime number: 282589933-1 (24,862,048 digits)

Just showing those entries submitted by 'Dobb': (Click here to show all)

+ 5^12+5^11+5^10+5^9+5^8+5^7+5^6+5^5+5^4+5^3+5^2+5+1 is prime; the repunit 1111111111111 is prime in both binary (base 2) and quinternary (base 5) notation. [Dobb]

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