M3321928319 has 0 factors in [2^74, 2^75-1].

M3321929113
 

I have factored M3321929113 from 72 to 73 bits, using Factor 5. Here is the result file:-

M3321929113 has 0 factors in [2^72, 2^73-1].

I won't be doing any more work on this exponent.

M3321928219 no factor from 2^74 to 2^75.

This took 26 months on my Pentium Pro 180 that I use for this project. 52 months to reach 2^76 is longer than I want to tie up a candidate, so I'm releasing this candidate and moving to the smallest candidate at the lowest available level.

M3321929209 has 0 factors in [2^72, 2^73-1].
released

result
 

Trial-factoring M3321929563 in [2^72, 2^73-1]
M3321929563 has 0 factors in [2^72, 2^73-1].

status.txt was:
3321929563
72
73
710786666801
1409540082161
1421573333604
7
0
2
0


I will continue on with this exponent to 76 bits.

Just how many billion digit candidates have had a factor found for them?

[QUOTE=Primeinator;142957]Just how many billion digit candidates have had a factor found for them?[/QUOTE]The current posting on the italian OBD website shows 225 factors of ~170? candidates? There are more that have been submitted, but just not shown. I ran a bunch and sent them to ET_ and Will .

[QUOTE]shows 225 factors of ~170? candidates?[/QUOTE]

Shouldn't the number of candidates eliminated be half the number of factors found (or less than half). i.e. if you find one factor, you find another don't you? Or is this what you were saying with the lag in information being posted? Sorry, I am really inquisitive.

[QUOTE=Primeinator;142969]Shouldn't the number of candidates eliminated be half the number of factors found (or less than half). i.e. if you find one factor, you find another don't you? Or is this what you were saying with the lag in information being posted? Sorry, I am really inquisitive.[/QUOTE]No.



Only prime factors are generally reported. The large co-factor may or may not be prime.

[QUOTE]Only prime factors are generally reported. The large co-factor may or may not be prime.[/QUOTE]

Oh, alright then. This was my misunderstanding. I thought it would include all factors and not just the prime ones.

[QUOTE=Primeinator;142957]Just how many billion digit candidates have had a factor found for them?[/QUOTE]

[url]http://ElevenSmooth.com/Billion.html[/url]

Shows all known factors and the extent of trial factoring for the currently open range.

I feel I should point out once again that this is a whimsical project. The data is real, but my level of seriousness can be judged from the fact that I use a Pentium Pro 180 Mhz machine for this project. It's only a fun diversion.

William