View Single Post
Old 2021-03-09, 14:24   #10
bur
 
Aug 2020

2528 Posts
Default All n < 2,400,000 tested

No new primes to report. Is anyone interested in the lresults file with the residues?

Code:
For n < 2,400,000

n =             digits

      2             7 (not a Proth)
    142            49
    202            67
    242            79
    370           118
    578           180
    614           191
    754           233
  6,430         1,942
  7,438         2,246
  7,894         2,383
 10,474         3,159
 11,542         3,481
 45,022        13,559
 46,802        14,095
 70,382        21,194
 74,938        22,565
367,310       110,578
485,014       146,010
Due to the lack of new primes, here are some statistics:

Largest n in progress = 3.20e6
# of digits = 963,000 (rank: ~ 1000)
FFT size = 320k
Avg. time = 3140 s

Smallest n in progress = 2.45e6
# of digits = 737,500 (rank: ~ 1690)
FFT size = 256k
Avg. time = 1935 s

In about 15 days Mega Prime territory will be reached with n = 3.33e6.
In about 30 days all n < 3.2e6 will have been tested.


Btw, since the office got a bit warm I have the CPU running with PPT = 128 W instead of 148 W. This decreased the package temperature from 74 °C to 68-70 °C while increasing computation times only by 1-2 %. That's not a bad tradeoff, I think.
bur is offline   Reply With Quote