keep an eye on http://mersenne.org/primenet/ a (as yet unconfirmed) candidate M43 between 25,000,000 and 33,000,000 (or abouts) seems to be in the verification stage. (found on http://www.mersenneforum.org/) ------- Mersenne Exponent Test State ------- Assigned in Tests Cleared Since Last Synchronization Factoring only : 9620 Factored composite : 860 Lucas-Lehmer testing : 56487 Lucas-Lehmer composite: 4577 Double-checking LL : 20150 Double-checked LL : 2671 Prime, UNVERIFIED : 1 ---------------------- ------- ---------------------- ------- TOTAL : 86257 TOTAL : 8109 'recent' finds: February 18, 2005: Prime M(25964951) May 15, 2004: Prime M(24036583) November 17, 2003: Prime M(20996011) W.