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

+ The smallest base-two pseudoprime that cannot be shown composite by elementary tests for divisibility by 3, 5 and 11 (1387 = 19*73).

+ The smallest 4-digit brilliant Harshad number. [Loungrides]

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