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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
192998811157992879 ~1989
193000794632018979 ~1991
19300331386006638 ~1988
193004711930047119 ~1990
19300511386010238 ~1988
193007934632190339 ~1991
193008594632206179 ~1991
193008671930086719 ~1990
19301291386025838 ~1988
19301363386027278 ~1988
19301459386029198 ~1988
19301543386030878 ~1988
19301591386031838 ~1988
19301651386033038 ~1988
19302323386046478 ~1988
193025273474454879 ~1990
19302551386051038 ~1988
19302851386057038 ~1988
193030511930305119 ~1990
19303079386061598 ~1988
19303283386065678 ~1988
19303523386070478 ~1988
193037231930372319 ~1990
19303811386076238 ~1988
19303871386077438 ~1988
Exponent Prime Factor Digits Year
19304303386086078 ~1988
193047431930474319 ~1990
19304819386096398 ~1988
19304951386099038 ~1988
19305059386101198 ~1988
19305131386102638 ~1988
19305431386108638 ~1988
19305563386111278 ~1988
19306379386127598 ~1988
19306643386132878 ~1988
193066871930668719 ~1990
19306799386135998 ~1988
19307339386146798 ~1988
19307399386147998 ~1988
19307531386150638 ~1988
19307891386157838 ~1988
19309019386180398 ~1988
19309583386191678 ~1988
19309919386198398 ~1988
19310111386202238 ~1988
19310339386206798 ~1988
19310443760831454310 ~1994
19310939386218798 ~1988
19311119386222398 ~1988
193111211158667279 ~1989
Exponent Prime Factor Digits Year
193112113476017999 ~1990
193123674634968099 ~1991
19312823386256478 ~1988
19313531386270638 ~1988
19313543386270878 ~1988
19313711386274238 ~1988
19314083386281678 ~1988
19314539386290798 ~1988
193148211545185699 ~1989
19314959386299198 ~1988
19315199386303998 ~1988
193153271931532719 ~1990
19315559386311198 ~1988
19316519386330398 ~1988
19316543386330878 ~1988
193165671545325379 ~1989
19316567189302356710
19316651386333038 ~1988
193168211159009279 ~1989
19316903386338078 ~1988
193172034636128739 ~1991
19317443386348878 ~1988
19317911386358238 ~1988
19317983386359678 ~1988
19318583386371678 ~1988
Exponent Prime Factor Digits Year
19318703386374078 ~1988
19318751386375038 ~1988
19318889247281779310 ~1992
19318979386379598 ~1988
19319039386380798 ~1988
19319059112050542310 ~1991
193192814250241839 ~1990
193195011159170079 ~1989
19319519386390398 ~1988
193195511931955119 ~1990
193196833091149299 ~1990
193208771159252639 ~1989
193213911545711299 ~1989
19322003386440078 ~1988
19322041135254287110 ~1992
193220533091528499 ~1990
19323071386461438 ~1988
19323191386463838 ~1988
19323299386465998 ~1988
193236171159417039 ~1989
19323659386473198 ~1988
193236591545892739
19323719386474398 ~1988
19323851386477038 ~1988
19323911386478238 ~1988
1389
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25-04-13