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

+ 489 is the smallest number ending in 1, 3, 7, or 9 that cannot be made prime by adding any multiple of 100 up to 700. (I.e., 589, 689, 789, 889, 989, 1089 and 1189 are all composite.)

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