Why am I not surprised?! Congratulations Professor Cooper. I'm sure that prize money will go nicely towards the electricity bill! But seriously, that's 4 to your name now, right?

[QUOTE=retina;423014]Verified, but no verifier.

So now we all know it of course. But why are there no verifications in the DB?

[url]http://www.mersenne.org/report_exponent/?exp_lo=74207281&full=1[/url][/QUOTE]

The verifying runs aren't typically included in the history... I don't know why. :smile:

Here's the official press release:
[URL="www.mersenne.org/primes/?press=M74207281"]M74207281[/URL]

[QUOTE=CuriousKit;423017]Why am I not surprised?! Congratulations Professor Cooper...[/QUOTE]

I hope this explains how it went undiscovered since last September... no shortage of machines there so it could have easily gone unnoticed, hiding until it was mined.

[url]https://www.youtube.com/watch?v=q5ozBnrd5Zc[/url] :smile:

using the metric on the wikipedia for mersenne prime for showing how many pages it would take this new one would take 5957 pages.

I made a couple of updates to the Wikipedia page on Mersenne numbers, although I think a few of us were modifying it at the same time. Hopefully I resolved the conflict without any conflicting information.

[QUOTE=axn;422959]So SIKRIT b value > 200000 but < 250000[/QUOTE]
Indeed, b needs to surpass 211807.

[QUOTE=paulunderwood;423020][url]https://www.youtube.com/watch?v=q5ozBnrd5Zc[/url] :smile:[/QUOTE]

Right now the website is getting some decent traffic from Reddit:
[URL="https://www.reddit.com/r/math/comments/41ori2/49th_mersenne_prime_found_m74207281/"]https://www.reddit.com/r/math/comments/41ori2/49th_mersenne_prime_found_m74207281/[/URL]

[url]https://www.newscientist.com/article/2073909-prime-number-with-22-million-digits-is-the-biggest-ever-found/[/url]

[url]http://www.forbes.com/forbes/welcome/#2715e4857a0b151adce74b3c[/url]

[url]http://www.forbes.com/sites/kevinknudson/2016/01/19/new-record-prime-number-discovered/[/url]

[QUOTE]This number has 22,338,618 digits, the last of which is a 1, and is nearly 5 million digits longer than the previous record prime. It is [B][I]almost certain[/I][/B] that there are other primes between the old record and this new one, but finding them will take a lot of work.[/QUOTE]

That is nice to know :smile: We are almost certain to find one between 57M and 74M.