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Strange Series (Posted on 2003-10-23) Difficulty: 3 of 5
What are the next two numbers in the following series?

2, 3, 5, 11, 23, 29, 41, 53, _ , _ .

Also mention the rule that the numbers follow.

See The Solution Submitted by Ravi Raja    
Rating: 2.6000 (5 votes)

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Solution Answer Comment 11 of 11 |
The required next two terms are 83 and 89.

The terms in the given series are primes m having the property that (2m+1) is also a prime.

Edited on March 20, 2008, 9:32 am
  Posted by K Sengupta on 2008-03-20 09:32:00

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