mersenneforum.org 1019370495
 User Name Remember Me? Password
 Register FAQ Search Today's Posts Mark Forums Read

 2003-12-27, 12:59 #1 wpolly     Sep 2002 Vienna, Austria 3·73 Posts 1019370495 I've got 66 primes for 15k=1019370495 and n<10000. Does this imply that this 15k*2^n-1 is a prime-prone sequence?
 2003-12-27, 18:44 #2 jocelynl   Sep 2002 10616 Posts At first glance it is. Could you provide me these numbers to be added to the stats, so I could plot the curve. n=10000 is low and large gaps can still appear. Some 15ks have 3 types of curve others have gaps or stairs. keep at it at least to 50000 and then youll know. Joss L15
 2003-12-28, 09:17 #3 wpolly     Sep 2002 Vienna, Austria 3·73 Posts For n under 10200: 3,7,9,10,19,25,29,30,37,38,42,45,48,54,73,87,93,98,101,124,162, 180,185,186,201,204,227,314,379,456,509,538,563,601,762,867, 998,1080,1184,1427,1442,1538,1713,1917,2142,2163,2393, 3050,3400,3792,3799,3803,3896,4119,5349,5382,5793,6034, 6213,6390,6530,6721,7612,7682,9011,9476,10083,10172. Last fiddled with by wpolly on 2003-12-28 at 09:18
 2003-12-28, 09:54 #4 wpolly     Sep 2002 Vienna, Austria 3×73 Posts For n between 10200 and 15000: 11039,12169,12984,13158
 2003-12-28, 11:43 #5 wpolly     Sep 2002 Vienna, Austria 21910 Posts For n between 15000 and 20000: 15222,16427,17227
 2003-12-30, 09:49 #6 wpolly     Sep 2002 Vienna, Austria 110110112 Posts for n between 20000 and 42000: 20825,22509,22806,22878,30732,30892,33013,37395