20111227, 13:25  #683 
Oct 2011
E_{16} Posts 
2611*2^11994671 is prime

20111229, 02:41  #684 
May 2008
Wilmington, DE
2^{2}·23·31 Posts 
1445*2^7515661 is prime
1449*2^7518491 is prime 1995*2^7520811 is prime 1767*2^7525051 is prime 1895*2^7530061 is prime 1561*2^7541311 is prime 1575*2^7551721 is confirmed prime 1685*2^7552801 is prime 1743*2^7562951 is prime 1437*2^7567021 is prime 1875*2^7580311 is prime 1539*2^7586391 is prime 1939*2^9713291 is prime 1683*2^7590031 is prime 1647*2^7595011 is prime 1911*2^7619331 is prime 1405*2^7655051 is confirmed prime 1455*2^7660671 is confirmed prime 1533*2^7691861 is prime 1913*2^7696981 is prime 1529*2^7700561 is prime 1719*2^7700571 is prime 1557*2^7713521 is prime 1623*2^7721391 is prime 1717*2^7748851 is prime 1975*2^7757751 is prime 1785*2^7774191 is prime 1993*2^7786111 is prime 1903*2^7797911 is prime 1763*2^7810841 is prime 1571*2^7828181 is prime 1929*2^7849671 is prime 1917*2^7852481 is prime 1851*2^7860531 is prime 1435*2^7862471 is prime 1547*2^7862341 is prime 1661*2^7862021 is prime 1425*2^7959171 is prime 1425*2^8090091 is prime 1797*2^8119411 is prime 1789*2^8130391 is prime 1885*2^8152711 is prime 1749*2^8157911 is prime 1647*2^8169101 is prime 1809*2^8174051 is prime 1927*2^8175371 is prime 1405*2^8201631 is prime 1965*2^8222681 is prime 1683*2^8293161 is prime 1759*2^8350091 is prime 1961*2^8386661 is prime 1709*2^8423361 is prime 1623*2^8440071 is prime 1669*2^8468031 is prime 1525*2^8471791 is prime 1881*2^8504311 is prime 1679*2^8527481 is prime 1531*2^8530051 is prime 1965*2^8622771 is prime 1485*2^8642021 is confirmed prime 1493*2^8866121 is prime 1695*2^8909991 is prime 1475*2^8938121 is prime 1533*2^8968321 is prime 1939*2^9032091 is prime 1743*2^9076781 is prime 1517*2^9153241 is prime 1483*2^9175511 is prime 1579*2^9202371 is prime 1719*2^9235131 is prime 1883*2^9259501 is prime 1587*2^9264181 is prime 1501*2^9265371 is prime 1665*2^9272701 is prime 1939*2^9279391 is prime 1459*2^9317211 is prime 1951*2^9342091 is prime 1755*2^9352351 is prime 1965*2^9355061 is prime 1581*2^9364731 is prime 1965*2^9376581 is prime 1849*2^9387651 is prime 1713*2^9421401 is prime 1503*2^9439681 is prime 1545*2^9462801 is confirmed prime 1973*2^9541801 is prime 1887*2^9542971 is prime 1925*2^9548601 is prime 1515*2^9552191 is confirmed prime 1527*2^9552611 is prime 1407*2^9558481 is prime 1641*2^9559101 is prime 1845*2^9559401 is confirmed prime 1849*2^9574971 is prime 1561*2^9618031 is prime 1817*2^9618201 is prime 1945*2^9622871 is prime 1555*2^9681951 is prime 1775*2^9824461 is prime 1775*2^9824661 is prime Last fiddled with by MyDogBuster on 20130128 at 15:35 
20120311, 20:19  #685 
Oct 2011
2×7 Posts 
2625*2^7057291 is Prime
2637*2^7358131 is Prime 2639*2^8921401 is Prime 
20120502, 05:55  #686 
May 2007
Kansas; USA
2×3^{2}×577 Posts 
1997*2^7891061 is prime
1581*2^8017491 is prime 1797*2^8041701 is prime 1441*2^8049491 is prime 1875*2^8081401 is prime 1727*2^8088301 is prime 1829*2^8101561 is prime 1623*2^8107221 is prime 1965*2^8109021 is prime 1461*2^8157971 is prime 1609*2^8162871 is prime 1585*2^8187871 is prime 1813*2^8195151 is prime 1517*2^8195601 is prime 1757*2^8269081 is prime 1801*2^8277151 is prime 1715*2^8289981 is prime 1947*2^8307731 is prime 1473*2^8323071 is prime 1611*2^8344751 is prime 1841*2^8344901 is prime 1623*2^8344961 is prime 1573*2^8350031 is prime 1557*2^8365331 is prime 1737*2^8373641 is prime 1977*2^8383301 is confirmed prime 1917*2^8383661 is prime 1855*2^8400051 is prime 1811*2^8412901 is prime 1595*2^8443261 is prime 1767*2^8452081 is prime 1575*2^8458541 is confirmed prime 1471*2^8487651 is confirmed prime 1665*2^8495651 is prime 1953*2^8541861 is prime 1729*2^8550411 is prime 1907*2^8566201 is prime 1919*2^8567481 is prime 1559*2^8672161 is prime 1451*2^8784821 is prime 1545*2^8875591 is confirmed prime 1559*2^8907361 is prime 1635*2^9011461 is prime 1787*2^9016241 is prime 1971*2^9034731 is prime 1875*2^9073771 is prime 1715*2^9137841 is prime 1461*2^9146261 is prime 1601*2^9382381 is prime 1667*2^9553721 is prime 1781*2^9567181 is prime 1449*2^9569081 is prime 1839*2^9570521 is prime 1587*2^9572501 is prime 1639*2^9577191 is prime 1495*2^9587071 is prime 1463*2^9606421 is prime 1433*2^9609901 is prime 1699*2^9617151 is prime 1405*2^9618191 is prime 1557*2^9637731 is prime 1713*2^9642681 is prime Last fiddled with by gd_barnes on 20121227 at 22:06 Reason: add primes 
20120717, 18:27  #687 
Oct 2011
2·7 Posts 
new Primes
2607*2^7467841 Prime
2625*2^7850481 Prime 2641*2^7852631 Prime 2603*2^7856421 Prime 2613*2^8014181 Prime 2637*2^8113501 Prime 2625*2^8212181 Prime 2625*2^9509661 Prime 2625*2^9715771 Prime 
20120729, 16:10  #688 
May 2008
Wilmington, DE
2^{2}×23×31 Posts 
Lennart found:
1741*2^8558231 is prime 1785*2^8612631 is prime 1875*2^8617731 is prime 1491*2^8624271 is prime 1767*2^8624661 is prime 1611*2^8629791 is prime 1815*2^8637431 is confirmed prime 1419*2^8648731 is prime 1557*2^8651371 is prime 1553*2^8655501 is prime 1713*2^8662861 is confirmed prime 1989*2^8700951 is prime 1521*2^8660171 is prime 1887*2^8677891 is prime 1737*2^8724141 is prime 1741*2^8724731 is prime 1459*2^8740011 is prime 1671*2^8752861 is prime 1659*2^8756601 is prime 1751*2^8788821 is prime 1447*2^8788971 is prime 1401*2^8790851 is prime 1741*2^8801291 is prime 1629*2^8810951 is prime 1519*2^8829951 is prime 1623*2^8839041 is prime 1485*2^8859171 is confirmed prime 1715*2^8878101 is prime 1817*2^8878861 is prime 1539*2^8927041 is prime 1479*2^8931151 is prime 1609*2^8942251 is prime 1943*2^8949601 is prime 1855*2^8959611 is prime 1703*2^8968421 is prime 1795*2^8974211 is prime 1761*2^8997451 is prime 1501*2^9007911 is prime 1925*2^9044361 is prime 1615*2^9065331 is prime 1605*2^9163021 is prime 1789*2^9177051 is prime 1473*2^9184791 is prime 1907*2^9187201 is prime 1945*2^9193491 is prime 1599*2^9194431 is prime 1609*2^9200151 is prime 1575*2^9204881 is confirmed prime 1405*2^9208731 is prime 1965*2^9414771 is prime 1883*2^9426941 is prime 1581*2^9449831 is prime 1845*2^9485841 is confirmed prime 1997*2^9487961 is prime 1613*2^9489761 is prime 1737*2^9519131 is prime 1581*2^9532151 is prime 1725*2^9678901 is prime 1433*2^9679141 is prime 1767*2^9679941 is prime 1603*2^9688231 is prime 1909*2^9696671 is prime 1679*2^9697721 is prime 1533*2^9716741 is prime 1839*2^9727241 is prime 1689*2^9729241 is prime 1447*2^9739771 is prime 1461*2^9738771 is prime 1647*2^9742891 is prime 1703*2^9761681 is prime 1807*2^9762971 is prime 1699*2^9772051 is prime 1431*2^9799181 is prime 1995*2^9810971 is prime 1551*2^9813061 is prime 1485*2^9822741 is confirmed prime 1907*2^9842541 is prime 1707*2^9856811 is prime 1423*2^9866671 is prime 1491*2^9933341 is prime 1435*2^9937551 is prime 1695*2^9946811 is prime 1999*2^9953311 is prime 1495*2^9955291 is prime 1731*2^9959231 is prime 1737*2^9966371 is prime 1515*2^9968481 is confirmed prime Last fiddled with by gd_barnes on 20130611 at 07:32 
20200424, 07:31  #689 
Mar 2006
Germany
B53_{16} Posts 
I've reanimated my k=1471 search at n=1.71M and found this for now:
1471*2^17727551 is prime! (533656 decimal digits) Continuing. 
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