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GIMPS has discovered a new largest known prime number: 282589933-1 (24,862,048 digits)
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1 1 1 1 1 1 8 8 8 1 1 8 8 8 1 1 8 8 8 1 1 1 1 1 1 The only strobogrammatic and tetradic square-congruent prime of order 5. [Ward]
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