1 points to the original site of the source code.
Status of Mersenne prime candidates with >= 10 million digits
This page is pretty out of date and is basically retired. Ever since
Primenet took over assigning 10M-digit numbers, theres no real need to
maintain this page. I'm keeping it mainly for nostalgia.
These files represent the factoring status of Mersenne prime candidates with
more than 10 million digits (with an exponent >= 33219281.)
The file nofactor10M.txt lists all prime exponents >= 33219281 and <
36000000 for which no factor is known, along with the upper factoring
limit attempted so far.
33219281,62 means that M33219281 has no factor <2^62.
The file factors10M.txt lists factors found so far. The format is
M( 33219317 )C: 33072288302959
which means that 33072288302959 divides 233219317-1.
Please send any factors you find to
me (I´ll also
forward them to
Will Edgington, the keeper of Mersenne factoring data since old.)
and please also send logs on unsuccessful attempts so I can update
the limits in nofactor10M.txt accordingly. Thanks.
Factoring status summary:
| Factored through 2^
| 53
| 54
| 55
| 56
| 57
| 58
| 59
| 60
| 61
| 62
| 63
| 64
|
|---|
| Count:
| 44110
| 0
| 0
| 17317
| 19
| 0
| 0
| 4
| 14700
| 1
| 0
| 0
|
| Factored composite:
|
83824
|
| No factor known:
|
76151
|
Changes:
- 22.9.99
- Bugfix: I had the factors list sorted lexically rather than numerically by
the exponent/factor fields. Thus, M( 123 )C: 1234 came before M( 123 )C: 234, and the
bigger factor went into factors10M.txt. This is fixed now, factors10M.txt should only
conatin smallest known factors.
- 13.9.99
- Fixed address at bottom of page. The "alexander." must be there.
- 10.9.99
- Added simple stats. Recompliled the Mfactor for UltraSparc with
WorkShop Compilers 5.0, which have fewer (or different) bugs in the code
optimization. That allowed me to use better optimization, the programs are
a little faster now.