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1031 (another Prime Pages' Curiosity) |
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will be down at times on those day (and possibly the next). (caldwell@utm.edu) The largest proven repunit prime has 1031 digits. 1031 = 2*3*5 + 7*11*13. [Capelle] Halloween falls on "ten thirty-one" (10/31) each year. It is a cross-quarter date, approximately midway between an equinox and a solstice. The final bid for an Erdös number on eBay (April 30, 2004) was $1031. Note that the bidding was for an Erdös number of 5. [McCranie] The smaller of the smallest twin emirps. Their reversals are also twins. [Punches]
(There is one curio for this number that has not yet been approved by an editor.)
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