Page 38 New factors received January 10, 1986 to January 17, 1986 1564 2, 497+ c127 145915152433. c116 Montgomery ecm 1565 2, 501+ c 87 1134974373913. p75 Montgomery ecm 1566 2, 505+ c112 6909226326451.46393668925691.145130814068214641. c68 Montgomery ecm(3) 1569 2, 507+ c 94 10030854869257.4966300248405749059. p63 Montgomery ecm(2) 1571 2, 517+ c134 80765938529. c123 Montgomery ecm 1572 2, 523+ c124 58052548129.62802266052329939. p96 Montgomery ecm(2) 1574 2, 529+ c139 8633301049969. p126 Montgomery ecm 1575 2, 533+ c140 111719734852571. p126 Montgomery ecm 1576 2, 541+ c142 512917469041.301118908380643. c115 Montgomery ecm(2) 1578 2, 547+ c165 1533926272849. c153 Montgomery ecm 1579 2, 549+ c100 37291324871089.165963031279777. p72 Montgomery ecm(2) 1581 2, 555+ c 77 22933014202051. c63 Montgomery ecm 1582 2, 559+ c141 12553986510209.101119526079159121. c111 Montgomery ecm(2) 1584 2, 563+ c170 522114085011580241. c152 Montgomery ecm 1585 2, 567+ c 98 562873504411.4744655685883. p74 Montgomery ecm(2) 1587 2, 569+ c159 2058017388830521. c144 Montgomery ecm 1588 2, 571+ c155 73205584889. c144 Montgomery ecm 1589 2, 573+ c105 1063307289553. c93 Montgomery ecm 1590 2,1886L c254 36368413831997333. prp237 Montgomery ecm 1591 7, 155+ c 62 18127525360389024220391. p39 Silverman mp-qs 1592 2, 585- c 57 339175003117573351. p40 See #1511 Silverman mp-qs 1593 2, 415- c 61 32367218471375835379289471. p35 See #1493 Silverman mp-qs 1594 2, 271+ c 78 115417966565804897.4635260015873357770993. p40 Silverman ecm + mp-qs 1596 2, 287+ c 51 84413238703660609. p34 See #1532 Silverman mp-qs 1597 2,1064+ c244 477170373761089. c229 Silverman ecm 1598 2,1128+ c216 7341898433044801. c200 Silverman ecm 1599 2,1176+ c203 3040410389842561. c187 Silverman ecm 1600 2,1188+ c212 59008134786334273. c195 Silverman ecm 1601 11, 114+ c 62 308673703543834165513. p41 Silverman mp-qs 1602 3, 204+ c 62 53958784909638588059956801. p36 Smith+Wagstaff cfrac 1603 2, 581+ c139 52588634980729. p125 Montgomery ecm 1604 2, 593+ c175 62438341552073. c162 Montgomery ecm 1605 2, 595+ c116 2087022330866411. c101 Montgomery ecm 1606 2, 597+ c120 5153543358319177. c104 Montgomery ecm 1607 2, 607+ c166 16780869326776069043. c147 Montgomery ecm 1608 2, 609+ c102 1602776802691. c89 Montgomery ecm 1609 2, 617+ c182 2549322536147. c170 Montgomery ecm 1610 2, 621+ c108 1159185064537. c96 Montgomery ecm 1611 2, 629+ c139 335199740796521. p124 Montgomery ecm 1612 2, 631+ c164 83188534509828089497. c144 Montgomery ecm 1613 2, 639+ c127 69779014917427. c113 Montgomery ecm 1614 2, 657+ c127 17543368071267913387. c108 Montgomery ecm 1615 2, 661+ c187 14330525250739. c174 Montgomery ecm 1616 2, 663+ c109 1001115859537. c97 Montgomery ecm 1617 2, 675+ c100 578348287651. c89 Montgomery ecm 1618 2, 679+ c174 48372050082931. c160 Montgomery ecm 1619 2, 685+ c150 226338814638851. c135 Montgomery ecm 1620 2, 687+ c138 779704994617. c126 Montgomery ecm 1621 2, 699+ c125 53590752072775417. p108 Montgomery ecm 1622 2, 705+ c100 3059396467891. c88 Montgomery ecm 1623 2, 715+ c139 176510711521. c128 Montgomery ecm 1624 2, 725+ c143 372933190718801. c129 Montgomery ecm 1625 2, 729+ c138 3110690934667. c125 Montgomery ecm 1626 2, 753+ c135 95741909371. p124 Montgomery ecm 1627 2, 771+ c149 158530119801167697937. c129 Montgomery ecm 1628 2, 795+ c110 107814999632867521.746485083287310097651. p72 Montgomery ecm(2) 1630 2, 799+ c217 16993492187603. c204 Montgomery ecm 1631 2, 805+ c159 33035981768945891. c143 Montgomery ecm 1632 2, 843+ c162 7317767583121. c149 Montgomery ecm 1633 2, 861+ c128 78390786811. c117 Montgomery ecm 1634 2, 877+ c260 42355831233323. c246 Montgomery ecm 1635 2, 883+ c256 4675171089162696937. p237 Montgomery ecm 1636 2, 885+ c131 873791632531.2354488203481. p107 Montgomery ecm(2) 1638 2, 895+ c164 10430557104202241. c148 Montgomery ecm