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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText>-----Original Message-----<br>From: extropy-chat [mailto:extropy-chat-bounces@lists.extropy.org] On Behalf Of Mike Dougherty<br>Sent: Wednesday, January 20, 2016 11:18 AM<br>To: ExI chat list <extropy-chat@lists.extropy.org><br>Subject: [Bulk] Re: [ExI] New prime number found</p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText>On Wed, Jan 20, 2016 at 1:37 PM, spike <<a href="mailto:spike66@att.net"><span style='color:windowtext;text-decoration:none'>spike66@att.net</span></a>> wrote:<o:p></o:p></p><p class=MsoPlainText>> Cool thanks for the heads up. I heard when it was discovered but with <o:p></o:p></p><p class=MsoPlainText>> a number that size it really is important to wait for a verification. <o:p></o:p></p><p class=MsoPlainText>> The discovery came on the 20th anniversary of GIMPS, the Great <o:p></o:p></p><p class=MsoPlainText>> Internet Mersenne Prime Search.<o:p></o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText>>>…So was that occurrence in the normal/expected frequency?<o:p></o:p></p><p class=MsoPlainText><span style='color:black'><o:p> </o:p></span></p><p class=MsoPlainText><span style='color:black'><o:p> </o:p></span></p><p class=MsoPlainText><span style='color:black'><o:p> </o:p></span></p><p class=MsoPlainText><span style='color:black'>The signal remains consistent and shows that cumulative probability theory works..<o:p></o:p></span></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText><span style='color:black'>I plotted log doubling time for the largest known prime against date. For the last nearly 20 years since the start of GIMPS, that doubling time is staying in the 5 to 10 second range, as shown:<o:p></o:p></span></p><p class=MsoPlainText><span style='color:black'><o:p> </o:p></span></p><p class=MsoPlainText><span style='color:black'><o:p> </o:p></span></p><p class=MsoPlainText><img border=0 width=704 height=391 id="Chart_x0020_1" src="cid:image001.png@01D1537C.57D015C0"><span style='color:black'><o:p></o:p></span></p><p class=MsoPlainText><span style='color:black'><o:p> </o:p></span></p><p class=MsoPlainText><span style='color:black'>The doubling time since the previous record on 25 Jan 2013 is 5.7 seconds. The size of the largest known prime number has doubled every 5.7 seconds for the past 3 yrs.<o:p></o:p></span></p><p class=MsoPlainText><span style='color:black'><o:p> </o:p></span></p><p class=MsoPlainText><span style='color:black'>spike<o:p></o:p></span></p><p class=MsoPlainText><span style='color:black'><o:p> </o:p></span></p><p class=MsoPlainText><span style='color:black'><o:p> </o:p></span></p><p class=MsoPlainText><span style='color:black'><o:p> </o:p></span></p><p class=MsoPlainText><span style='color:black'><o:p> </o:p></span></p><p class=MsoPlainText><o:p> </o:p></p></div></body></html>