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

+ The largest prime less than ten thousand; additionally, on deleting the last digit, it becomes the largest prime less than one thousand. [Hasler]

+ The largest 4-digit prime whose sum of digits is a perfect number. [Loungrides]

+ The only 4-digit prime formed from the concatenation of two primes summed to a thousand, (997, 3). [Loungrides]

(There is one curio for this number that has not yet been approved by an editor.)

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