Prime numbers and primality testing is a Restricted Group with 1137 members.
Yahoo Groups
 
n!10+2 results 

Nathan Russell

Message 1 of 1 , Jan 17, 2012 

View Source

Hi Ken,

Gmail isn't letting me attach the zip of certificates, or rather keeps
running slow. Let me know if you'd like me to just throw it on rapidshare
for you to download or something. Also, I have two emails for you - which
is current?

The following are prime (note that the first 6 are the primes 2 thru 13):
0!10+2
1!10+2
3!10+2
5!10+2
9!10+2
11!10+2
13!10+2
19!10+2
21!10+2
25!10+2
41!10+2
57!10+2
all via pfgw

79!10+2
127!10+2
135!10+2
149!10+2
165!10+2
177!10+2
193!10+2
209!10+2
223!10+2
255!10+2
273!10+2
287!10+2
297!10+2
375!10+2
433!10+2
459!10+2
481!10+2
565!10+2
1079!10+2
1435!10+2
1543!10+2
1771!10+2
1913!10+2
1983!10+2
2063!10+2
2305!10+2
2653!10+2
6789!10+2
8757!10+2
11149!10+2
proven through primo. The last number has 4031 decimal digits and took
approx 300 hours on my dual core Core II laptop, using 64 bit primo,
between other tasks. I don't plan to search this range further, but the
next few PRPs are:
13671!10+2
15433!10+2
16369!10+2
17261!10+2
18129!10+2
22129!10+2
22785!10+2
22875!10+2
25235!10+2
25247!10+2
26329!10+2