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260389232731 (another Prime Pages' Curiosity) |
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260389232731 = 13579111315 + 246810121416. Note that two
terms are concatenations of 8 odd numbers and 8 even
numbers. The smaller primes of this type are only 3 = 1 + 2
and 37 = 13 + 24. [Poo Sung]
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