20230527, 12:53  #12 
Dec 2022
2^{4}×3^{3} Posts 
The known proof about primitive divisors in Lucas sequences makes this a finite problem, and verifiable in theory: there are always only finitely many. (We can't use n^2+1 directly as that has infinity many terms without a primitive divisor, which is surely true for any polynomial.)

Thread Tools  
Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
(M48) NEW MERSENNE PRIME! LARGEST PRIME NUMBER DISCOVERED!  dabaichi  News  571  20201026 11:02 
Not the largest prime  Tomws  Lounge  5  20200503 01:46 
Largest PM1 factors?  hansl  Data  4  20190825 22:50 
List of largest factors  DrTarr  Math  4  20160211 07:00 
need Pentium 4s for 5th largest prime search (largest proth)  wfgarnett3  Lounge  7  20021125 06:34 