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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.
Exp. Prime Factor Digits Year
11711690...505369215 2015
118147428977 1957
11819742...964801218 2011
11872563936 1952
11873486...431569204 2011
11931216876 1952
11931297...839617251 2014
11938522...472729104 2014
1201576495 1952
120119672397
120185102877
12011354...983199253 2013
12133275116 1952
1217104574132710 1964
122324474 1952
1223317995
12234226...090073346 2011
1229368715 1952
1229467035
12315317936 1961
123156847597
1249974235 1952
1249523580818
1277****...********* 20??
12791040...729087386 1952
Exp. Prime Factor Digits Year
12894852...226233314 2011
13018531...989889311 2011
1303104448498 1957
13031465...454681377 2011
13071208...866017325 2011
132179274 1952
132113949777
132148480717
13215503...594543335 2011
132727309677 1957
13271685...581921384 2011
136181674 1952
136133970577
13611374501139
13613287...507231326 2011
1367109375 1952
1367656175
13672323916
136725617597
13734092...555751322 2011
138182874 1952
1399288753618 1961
13991139...612231308 2020
14091042...576367313 2011
142316990637 1952
Exp. Prime Factor Digits Year
14271948...378409393 2011
1433200635 1952
1433531012498
1433865761298
143928794 1952
1439460495
14391726816
1447578815 1952
145129034 1952
14511741216
14516964816
145387194 1952
1459145915 1952
1459933775
14591170...474241431 2011
14716734...592327346 2017
1481710895 1952
14871750...399751426 2011
1489714735 1952
14892474...847959235 2020
149929994 1952
151130234 1952
152325220897 1957
1523111780889710
1531887995 1952
Exp. Prime Factor Digits Year
15315785...483401443 2011
15431018396 1952
15434721596
15433499...314393405 2012
15531269...243383350 2011
155931194 1952
15594692...084273415 2013
158331674 1952
15831899616
158385893597
1583438174418
1607289275 1952
160923941937 1957
1627257228718 1961
16377481...262407485 2011
16575939...503137444 2011
1663166315 1952
166360134097
1667133375 1952
166724938337
1667109755298
1693101595 1952
16931438...636639406 2011
169712354177 1952
17093793996 1952
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