Question regarding a n/o. is a prime
 

a while ago I was checking the progress of my search results and found a message saying that "M5 W1000A000A,00000000!" is a prime. Can anybody shed light on this message as I have no idea what M5 W1000A000A,00000000 refers to.?
Thank you all,
Paul

[QUOTE=Paul;402003]Can anybody shed light on this message as I have no idea what M5 W1000A000A,00000000 refers to.?[/QUOTE]M5 info is here: [URL]http://mersennewiki.org/index.php/List_of_known_Mersenne_primes[/URL]

Error code (00000000) info: [URL]http://www.mersenneforum.org/showpost.php?p=12120&postcount=12[/URL]

We think the other part (W1000A000A) is the software version identifier and the Res64 residue: [URL]http://www.mersenneforum.org/showthread.php?t=10668[/URL]

:mike:

Edit: Yep!

[URL]http://www.hoegge.dk/mersenne/resultspenultimate.txt[/URL]

[QUOTE][CODE]M5 interim Wc1 residue 000000000000000E at iteration 3
M5 interim Wc1 residue 0000000000000008 at iteration 4
M5 interim Wc1 residue 0000000000000000 at iteration 5
M5 is prime! Wc1: 000A000A,00000000[/CODE][/QUOTE]

You tested the number 2^5-1=31. 31 is prime.

PrimeNet wouldn't have given you this number, since we already know that's prime (obviously). Most likely, you hit Advanced > Test and entered "5".