483 · 22155456 + 1
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GIMPS has discovered a new largest known prime number: 282589933-1 (24,862,048 digits)

At this site we maintain a list of the 5000 Largest Known Primes which is updated hourly. This list is the most important databases at The Prime Pages: a collection of research, records and results all about prime numbers. This page summarizes our information about one of these primes.

This prime's information:

field (help)value
Description:483 · 22155456 + 1
Verification status (*):Proven
Official Comment:
Proof-code(s): (*):L3760 : Okazaki, PSieve, Srsieve, PrimeGrid, LLR
Decimal Digits:648860   (log10 is 648859.59428103)
Rank (*):1660 (digit rank is 1)
Entrance Rank (*):267
Currently on list? (*):short
Submitted:4/7/2014 19:17:25 CDT
Last modified:4/7/2014 22:22:20 CDT
Database id:117578
Status Flags:TrialDiv
Score (*):45.3054 (normalized score 3.1854)

Verification data:

The Top 5000 Primes is a list for proven primes only. In order to maintain the integrity of this list, we seek to verify the primality of all submissions.  We are currently unable to check all proofs (ECPP, KP, ...), but we will at least trial divide and PRP check every entry before it is included in the list.
machineWinXP Dual Core 2.6GHz 64-bit Laptop
notesCommand: pfgw64.exe -t -q"483*2^2155456+1" 2>&1
PFGW Version [GWNUM 27.8]
Primality testing 483*2^2155456+1 [N-1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 13
Calling Brillhart-Lehmer-Selfridge with factored part 100.00%
483*2^2155456+1 is prime! (2250.4697s+0.0216s)
[Elapsed time: 2251 seconds]
modified2014-04-14 15:25:10
created2014-04-07 21:16:14

Query times: 0.0005 seconds to select prime, 0.0007 seconds to seek comments.