This number has not been released by Primenet yet. Most likely you
inserted it manually in your worktodo.ini and made a mistake while
entering it. You must have written Test=38158537,62,0 telling Prime95
that the number has been prefactored to 62 bits when in fact it has only
been prefactored to 61 bits. Hence Prime95 started trialfactoring above
62 bits and this factor was missed. You are lucky that P-1 found the
factor otherwise you would have spent a lot of time in the LL test when
the number had a small and relatively easily found factor.
Garo
Megyeri Laszlo wrote:
Hi,
I got this result yesterday. I used prime95 24.14.
[Tue Feb 07 02:41:00 2006]
M38158537 no factor to 2^68, Wc1: 6E4DFDF8
[Tue Feb 07 15:29:57 2006]
P-1 found a factor in stage #1, B1=455000.
M38158537 has a factor: 3422876793264023401
2^68 is greater than 3422876793264023401. Is not a problem?
3422876793264023401 is a real factor of M38158537.
Laszlo Megyeri
PS.
2^38158537-1 = 2*2^38158536-1 = 2*(2^312)^122303-1 ~~
2*1514138487924360194^122303-1 =
2*(1514138487924360194^779)^157-1 ~~ 2*2759194418904833885^157-1 ~~ 2*1711438396632011701-1 =
3422876793264023402-1 = 3422876793264023401 ~~ 0
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