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Next one(s), please (Posted on 2015-01-08) Difficulty: 1 of 5
S=(2, 19, 23, 317, 1031...)

What can be said about the next number(s) in the above sequence?

No Solution Yet Submitted by Ady TZIDON    
Rating: 4.0000 (1 votes)

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Solution Next number | Comment 1 of 2
The next number is 49081. These are the indices of prime repunits in base 10.

  Posted by Math Man on 2015-01-08 08:10:50
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