| digits | factor | from | B1 | sigma | date | who |
| 49 | 7612068647760892587567279171698469451260170146501 | 6^250+1 | 3e6 | 1170774930 | 12 Nov 1998 | M. Quercia |
| 47 | 28435499313099721230022375458539937885696690833 | 874^38+1 | 3e6 | 1347390375 | 02 Oct 1998 | A. Yamasaki |
| 45 | 914570427675304311896510460383772935570463409 | 2^1614+1 | 3e6 | 1373431946 | 26 Oct 1998 | P. Zimmermann |
| 45 | 547283138069536869412948975377385222182769003 | 7^241-1 | 3e6 | 1711464297 | 10 Sep 1998 | A. Brown |
| 45 | 148296291984475077955727317447564721950969097 | 2^599-1 | 3e6 | 1604840403 | 13 Mar 1998 | P. Zimmermann |
| 45 | 106124644646629262293671146508062271116589169 | Cullen(423) [c/s] | 3e6 | 2042844360 | 24 Dec 1998 | P. Leyland |
| 44 | 37835716074058426890725596550304118196498159 | Bernoulli(152) | 3e6 | 1925437372 | 29 Oct 1998 | A. MacLeod |
| 44 | 16937690868390879532181520681947735653224689 | p(26711) | 3e6 | 1592699779 | 27 Oct 1998 | P. Zimmermann |
| 44 | 10942831530607818867620259261707462111364523 | C(334,167)+1 | 3e6 | 397210611 | 25 Sep 1998 | A. Brown |
| 43 | 4113692566646269086681360438319957036345801 | 11^265+1 | 3e6 | 1608896840 | 15 Dec 1998 | P. Zimmermann |