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37033804397792473 (another Prime Pages' Curiosity) |
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The average of any pair of these 21 primes is also prime:
{66772273, 96208141, 4124025181, 5489743873, 117302261653,
163892796481, 181976431633, 273114794041, 577134609901,
708575135581, 2004867173041, 643966478961193,
1074902910136753, 2430714408803833, 2787742815203461,
3497947627590601, 5684113455430441, 6596939759874313,
16426063554792193, 29473090317646981, 37033804397792473}. All 210 prime averages are distinct. [Andersen]
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