is 2 65047733 - 1
has 19581319 decimal digits
takes 157.786 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L255F54ABBCBE1BABdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual275117.635365.3333%580000116000004.15183.4845%121.787166.5413%
Target27458.816364.8649%450000140000004.17943.8621%62.995666.2218%
Difference+1+58.8190+0.4685%+130000-2400000-0.0276-0.3776%+58.7914+0.3195%

Known prime factors:
No known factors for M65047733

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2013-11-07Architects CubedR720_258000011600000---4.152--3.484%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2003-10-31ANONYMOUSv4_computers21259--0.001--
2004-02-231997rj7v4_computers21260--0.002--
2016-03-28Mark RoseManual testing260264--0.052--
2009-11-16ANONYMOUSComputerID264265--0.057--
2010-05-24GrunwalderGIMPLyc-i7265266--0.115--
2010-06-08ANONYMOUS266267--0.230--
2010-08-25seekualinux-seekua267268--0.460--
2010-08-29seekualinux-seekua268269--0.919--
2012-01-12rickashPowerspecG210269270--1.838--
2013-03-29SMoffatManual testing270271--3.676--
2013-07-31Kyle AskineManual testing271272--7.352--
2013-07-31Kyle AskineManual testing272273--14.70--
2013-09-09ChuckManual testing273274--29.41--
2022-09-13La GüiraManual testing274275--58.82--


ECM factoring results:
No ECM results for M65047733


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2014-12-11curtischum110--11l255F54ABBCBE1BAB157.8
2022-11-27Ryan PropperManual testing255F54ABBCBE1BAB157.8


PRP results:
No PRP results for M65047733


P-1 factor-bounds graph:
B1 = 580000, B2 = 11600000 (P-1 stage 2)
B1 = 580000 (P-1 stage 1)
104
105
106
104
105
106
107
108
TF factor-bounds graph:
275
274
273
272
271
270
269
268
267
266
265
264
260
259
this exponent TF target: 74
TF double-checked to: 67.8
250
260
270
280
Last modified: 2023-04-26T21:34:10+00:00