MultiFactorial Prime Search - Page 5

lalera · 2016-10-19, 16:13

Quote:

Originally Posted by rogue

Good to hear. Any estimates on when you will complete the range?

hi,
to the end of november 2016

wombatman · 2016-11-02, 23:35

The following primes have been found for n!24 +/- 1:

Code:

26!24+1 is prime! (53)
28!24+1 is prime! (113)
30!24-1 is prime! (179)
30!24+1 is prime! (181)
32!24+1 is prime! (257)
36!24-1 is prime! (431)
36!24+1 is prime! (433)
40!24+1 is prime! (641)
42!24+1 is prime! (757)
44!24+1 is prime! (881)
46!24+1 is prime! (1013)
48!24-1 is prime! (1151)
48!24+1 is prime! (1153)
54!24-1 is prime! (9719)
54!24+1 is prime! (9721)
60!24-1 is prime! (25919)
62!24-1 is prime! (32983)
64!24+1 is prime! (40961)
70!24+1 is prime! (70841)
78!24-1 is prime! (758159)
80!24+1 is prime! (1146881)
84!24+1 is prime! (2177281)
88!24+1 is prime! (3604481)
90!24-1 is prime! (4490639)
94!24+1 is prime! (6658961)
102!24-1 is prime! (77332319)
118!24+1 is prime! (785757281)
126!24+1 is prime! (9743872321)
150!24-1
162!24+1
170!24+1
172!24+1
180!24-1
196!24+1
202!24+1
230!24+1
232!24+1
234!24+1
240!24-1
256!24+1
262!24+1
270!24-1
270!24+1
278!24+1
294!24+1
306!24-1
318!24-1
324!24-1
330!24-1
360!24-1
364!24+1
372!24-1
372!24+1
376!24+1
396!24-1
396!24+1
426!24-1
436!24+1
442!24+1
444!24+1
478!24+1
500!24-1
562!24+1
566!24+1
618!24+1
686!24-1
760!24+1
812!24+1
858!24+1
900!24-1
972!24+1
1128!24+1
1210!24+1
1298!24-1
1322!24+1
1416!24-1
1488!24+1
1542!24+1
1602!24+1
1762!24+1
2052!24+1
2144!24+1
2390!24+1
2428!24+1
2712!24+1
3048!24-1
3098!24+1
3192!24+1
3278!24-1
3464!24-1
3472!24+1
3510!24+1
3756!24-1
3850!24+1
4518!24+1
4602!24+1
4942!24+1
5406!24-1
5636!24-1
6798!24+1
6886!24+1
7956!24+1
8010!24+1
8226!24-1
8876!24+1
9318!24-1
9402!24-1
9482!24+1
9750!24+1
10112!24+1
10532!24-1
10564!24+1
10630!24+1
10716!24-1
11332!24+1
13278!24+1
13416!24-1
14124!24-1
14492!24+1
14866!24+1
15140!24-1
16194!24+1
16768!24+1
17134!24+1
18604!24+1
21330!24+1
21404!24+1
21614!24-1
22204!24+1
23974!24+1
24944!24+1
25850!24+1
26368!24+1
27464!24-1
28668!24+1
30686!24-1
31080!24-1
31188!24-1
32176!24+1
32668!24+1
33238!24+1
34932!24+1
35306!24+1
38556!24-1
39776!24+1
40430!24-1
41340!24+1
46266!24-1
50996!24-1
59616!24-1
60078!24-1
64566!24+1
69718!24+1
72924!24-1
73176!24+1
73194!24-1
77704!24+1
79116!24-1
89374!24+1
91082!24+1
93128!24-1
96082!24+1
96416!24+1
101142!24+1
102572!24+1
106608!24+1
113524!24+1
124650!24-1
128210!24-1
129186!24+1
131498!24+1
132498!24-1
138278!24+1
142698!24-1
153922!24+1
154446!24-1
155092!24+1
162972!24+1
168864!24+1
169028!24-1
178966!24+1
192320!24+1
217560!24+1
226208!24+1
227194!24+1
229204!24+1
236040!24-1
247674!24+1
282718!24+1
296606!24-1

I tested n up to 300,000. I am releasing this base to anyone who may want it.

rogue · 2016-11-03, 13:35

Thanks for the update. Your list matches Ken's with the exception of 172!24+1.

I should complete the double-check for all types to n=100000 by the end of next week. I have only found two types (so far) where Ken's list is missing primes for n > 50,000.

wombatman · 2016-11-03, 14:13

Good deal. Type 25 is around n=240,000 or so, so that one will take a bit longer. I'll post all found primes here when it completes to n=300,000.

rogue · 2016-11-06, 16:30

FYI, I updated the first post.

lalera · 2016-11-06, 18:29

hi,
i compiled mfsieve v1.2 (static linked) for win64
x86_64-w64-mingw32-g++ -static -O3 -o mfsieve.exe */*.cpp mf/*.S -lpthread

lalera · 2016-11-06, 18:32

hi,
my first results for n!17+/-1
range n=100k to 230k

Code:

106958!17+1
107093!17+1
107868!17-1
111259!17+1
112666!17-1
115321!17+1
120034!17-1
120184!17-1
122916!17-1
124267!17+1
126200!17+1
126993!17+1
128370!17+1
131729!17+1
135766!17+1
144407!17-1
145728!17+1
145833!17-1
153440!17+1
153556!17+1
158687!17-1
164299!17-1
166265!17-1
166614!17+1
194968!17-1
195258!17-1
204737!17-1
207816!17+1
209323!17-1
214339!17+1
229751!17-1

continuing to n=300k

rogue · 2016-11-06, 19:31

Quote:

Originally Posted by lalera

hi,
i compiled mfsieve v1.2 (static linked) for win64
x86_64-w64-mingw32-g++ -static -O3 -o mfsieve.exe */*.cpp mf/*.S -lpthread

I probably should have compiled with -static in the one I posted. I'll do that in the future.

lalera · 2016-11-06, 19:42

hi,
i downloaded mfsieve v1.2 from
http://www.mersenneforum.org/rogue/mfsieve_1.2.7z
the executable in it is not -static linked
i would be happy if you will do this in the future
because i will delete the software-installation soon

rogue · 2016-11-08, 23:15

!3 is completed to 150,000. I found two primes in the last two days of testing the range, which was not expected. Interestingly, all of these were of the +1 form.

101700!3+1 55029
102055!3+1 155621
123869!3+1 192358
148356!3+1 234258
149856!3+1 236845

lalera · 2016-11-27, 19:17

hi,
here are the results for n!17+/-1
range n=230k to 300k

Code:

230713!17+1
247309!17-1
250364!17-1
252362!17+1
253782!17+1
254957!17-1
255967!17+1
262285!17-1
263855!17-1
264973!17-1
269527!17+1
270269!17+1
276165!17+1
280320!17-1
282991!17-1

n!17+/-1 released

2016-11-06, 19:42	#53
lalera Jul 2003 13×47 Posts	hi, i downloaded mfsieve v1.2 from http://www.mersenneforum.org/rogue/mfsieve_1.2.7z the executable in it is not -static linked i would be happy if you will do this in the future because i will delete the software-installation soon Last fiddled with by lalera on 2016-11-06 at 19:45

2016-11-27, 19:17	#55
lalera Jul 2003 263₁₆ Posts	hi, here are the results for n!17+/-1 range n=230k to 300k Code: 230713!17+1 247309!17-1 250364!17-1 252362!17+1 253782!17+1 254957!17-1 255967!17+1 262285!17-1 263855!17-1 264973!17-1 269527!17+1 270269!17+1 276165!17+1 280320!17-1 282991!17-1 n!17+/-1 released

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2016-11-03, 13:35	#47
rogue "Mark" Apr 2003 Between here and the 18CB₁₆ Posts	Thanks for the update. Your list matches Ken's with the exception of 172!24+1. I should complete the double-check for all types to n=100000 by the end of next week. I have only found two types (so far) where Ken's list is missing primes for n > 50,000.

2016-11-03, 14:13	#48
wombatman I moo ablest echo power! May 2013 29·61 Posts	Good deal. Type 25 is around n=240,000 or so, so that one will take a bit longer. I'll post all found primes here when it completes to n=300,000.

2016-11-06, 16:30	#49
rogue "Mark" Apr 2003 Between here and the 11·577 Posts	FYI, I updated the first post.

2016-11-08, 23:15	#54
rogue "Mark" Apr 2003 Between here and the 1100011001011₂ Posts	!3 is completed to 150,000. I found two primes in the last two days of testing the range, which was not expected. Interestingly, all of these were of the +1 form. 101700!3+1 55029 102055!3+1 155621 123869!3+1 192358 148356!3+1 234258 149856!3+1 236845