20090512, 19:26  #496 
Jun 2006
Chertsey Surrey UK
358_{10} Posts 
1815*2^6278401 Already in Database

20090512, 23:02  #497 
Apr 2009
2^{2}·3 Posts 
1793*2^6289761, It appears to be 189344 digits long  submitted

20090513, 07:13  #498 
Jun 2006
Chertsey Surrey UK
101100110_{2} Posts 
1841*2^6299821 New Prime
1881*2^6299171 New Prime 
20090513, 11:00  #499 
May 2007
Kansas; USA
2801_{16} Posts 
LaurenU2 found:
1975*2^6304131 is prime 
20090513, 21:39  #500 
May 2007
Kansas; USA
7^{2}·11·19 Posts 
LaurenU2 found:
1485*2^6306111 is prime 1965*2^6308451 is prime 
20090514, 05:06  #501 
May 2007
Kansas; USA
7^{2}·11·19 Posts 
LaurenU2 found:
1637*2^6322721 is prime Fozzie found: 1801*2^6340531 is prime LaurenU2 found: 1733*2^6379041 is prime LaurenU2 found: 1763*2^6406561 is prime Last fiddled with by mdettweiler on 20090921 at 02:36 Reason: merged (cleanup) 
20090515, 07:51  #502 
"Lennart"
Jun 2007
2^{5}×5×7 Posts 
1495*2^6350211 New
1539*2^6358441 is Prime (New) 2535*2^4261581 is Prime 2579*2^4282521 is Prime Last fiddled with by mdettweiler on 20090921 at 02:37 Reason: merged (cleanup) 
20090515, 14:57  #503 
Jun 2006
Chertsey Surrey UK
2×179 Posts 
1995*2^6363391 New Prime
1741*2^6371571 New Prime 1455*2^6454531 New Prime 1509*2^6505011 New Prime 1877*2^6512561 New Prime Last fiddled with by mdettweiler on 20090921 at 02:38 Reason: merged (cleanup) 
20090516, 02:58  #504 
May 2007
Minnesota USA
110001_{2} Posts 
1975*2^6375951 is prime

20090518, 22:27  #505 
Apr 2009
2^{2}×3 Posts 
1863*2^6449511, It appears to be 194153 digits long  submitted
1851*2^6569581 is Prime! It appears to be 197768 digits long submitted Last fiddled with by mdettweiler on 20090921 at 02:38 Reason: merged (cleanup) 
20090519, 10:11  #506 
May 2007
Kansas; USA
7^{2}·11·19 Posts 
LaurenU2 found:
1785*2^6460701 is prime The 72nd prime for the very prolific k=1785. Edit: k=1455 that Brian just found a prime for is even more prolific; now with 78 primes. LaurenU2 found a nice pair: 1627*2^6476731 is prime 1431*2^6477631 is prime LaurenU2 went on one of his patented runs: 1575*2^6489971 is confirmed prime 1757*2^6490081 is prime 1877*2^6495261 is prime 1791*2^6496891 is prime 1985*2^6497281 is prime That's amazing for such a large nrange! Fozzie found: 1745*2^6502601 is prime LaurenU2 found: 1991*2^6548101 is prime 1559*2^6552521 is prime LaurenU2 found: 1635*2^6562851 is prime LaurenU2 found: 1793*2^6569121 is prime Fozzie found: 1505*2^6575401 is prime LaurenU2 found: 1815*2^6591581 is confirmed prime 1495*2^6591591 is prime LaurenU2 found: 1617*2^6607521 is prime HelixVonSmelix found: 1573*2^6622031 is prime The prime was reported incorrectly at top5000. I am in the process of getting it corrected. I confirmed my own prime: 2145*2^4250891 is confirmed prime 2507*2^4257341 is prime 2425*2^4265371 is prime 2477*2^4272201 is prime 2183*2^4278801 is prime 2565*2^4279241 is confirmed prime 2569*2^4283331 is prime Last fiddled with by mdettweiler on 20090921 at 02:40 Reason: merged (cleanup) 
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