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Aloof prime (Posted on 2018-07-12) Difficulty: 3 of 5
53 is notable for being the first prime not to be part of a twin or cousin prime pair.
Its two closest primes are 47 and 59, both of which are sexy primes with 53.

The first prime not to be part of a twin, cousin, or sexy prime pair
is /you tell me/.

No Solution Yet Submitted by Ady TZIDON    
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Hints/Tips Adding one word Comment 2 of 2 |
To exclude  number 2 as the trivial answer one wore should be inserted into the 1st sentence: 

..."53 is notable for being the first ODD prime not to be part of a twin or cousin prime pair."...

  Posted by Ady TZIDON on 2018-07-12 18:44:25
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