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Small Mersenne Prime Factors
Prime numbers of the form Mp= 2p − 1 are called Mersenne primes. For Mp to be prime, p must also be prime.
Any factor q of a Mersenne number 2p − 1 must be of the form 2kp + 1, where integer k ≥ 0. Furthermore, q must be 1 or 7 mod 8.
Exponent Prime Factor Digits Year
219433333510933299 ~1991
219433872194338719 ~1990
219436971316621839 ~1990
219438371316630239 ~1990
219438471755507779 ~1990
21943871438877438 ~1988
21943919438878398 ~1988
21944099438881998 ~1988
219441371316648239 ~1990
21944243438884878 ~1988
21944423438888478 ~1988
21944651438893038 ~1988
21944759438895198 ~1988
219448371316690239 ~1990
21945191438903838 ~1988
21945239438904798 ~1988
21945383438907678 ~1988
219458211316749279 ~1990
21946079438921598 ~1988
219466011316796079 ~1990
21946751438935038 ~1988
219470894828359599 ~1991
21947483438949678 ~1988
21948323438966478 ~1988
219488211316929279 ~1990
Exponent Prime Factor Digits Year
21948851438977038 ~1988
21949139438982798 ~1988
21949223438984478 ~1988
219497894828953599 ~1991
21949871438997438 ~1988
219501971317011839 ~1990
21950783439015678 ~1988
21951179439023598 ~1988
219512113951217999 ~1991
219515331317091999 ~1990
21951623439032478 ~1988
21951731439034638 ~1988
21951971439039438 ~1988
219519771317118639 ~1990
21952823439056478 ~1988
219530511756244099 ~1990
219533531317201199 ~1990
21953411439068238 ~1988
21953999439079998 ~1988
21954059439081198 ~1988
21954323439086478 ~1988
219549011317294079 ~1990
21955919439118398 ~1988
21955931439118638 ~1988
219560091756480739 ~1990
Exponent Prime Factor Digits Year
21956303439126078 ~1988
219563511756508099 ~1990
21956471439129438 ~1988
21957503439150078 ~1988
21957623439152478 ~1988
219582131317492799 ~1990
219582891756663139 ~1990
21959159439183198 ~1988
21959279439185598 ~1988
21960131439202638 ~1988
21960299439205998 ~1988
219605773513692339 ~1991
21961319439226398 ~1988
219614178784566819 ~1992
21961931439238638 ~1988
219619315710102079
21961991439239838 ~1988
21962411439248238 ~1988
219627011317762079 ~1990
219630771317784639 ~1990
219632093074849279 ~1990
219634512196345119 ~1990
21963671439273438 ~1988
21963863439277278 ~1988
21964031439280638 ~1988
Exponent Prime Factor Digits Year
219640811317844879 ~1990
219641571317849439 ~1990
219641571757132579
21964451439289038 ~1988
21965039439300798 ~1988
21965243439304878 ~1988
21965519439310398 ~1988
21966359439327198 ~1988
21966551439331038 ~1988
219666771318000639 ~1990
21966683439333678 ~1988
21967019439340398 ~1988
21967031439340638 ~1988
219670313954065599
21967091439341838 ~1988
21967331439346638 ~1988
21967763439355278 ~1988
219678673514858739 ~1991
21968099439361998 ~1988
21968279439365598 ~1988
21968483439369678 ~1988
21968543439370878 ~1988
219687171757497379 ~1990
21969191439383838 ~1988
21970499439409998 ~1988
1553
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26-01-11