is 2 1152527 - 1
has 346946 decimal digits
takes 0.034 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-LB80891DC83313697double-checked
PRPA0E053C3DB2D51E4PRP-tested

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual269103.587069.5652%11525271248241995029.274110.9035%132.861172.8837%
Target2600.133365.0000%50002080000.00070.7712%0.134065.2699%
Difference+9+103.4537+4.5652%+1147527+12482211950+29.2734+10.1322%+132.7271+7.6137%

Known prime factors:
No known factors for M1152527

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2002-03-16Jocelyn Larouchev4_computers10001000---4.29764e-5--0.003%
2002-03-24Jocelyn Larouchev4_computers40004000---0.000--0.031%
2002-06-02ANONYMOUSv4_computers500001000000---0.004--1.334%
2012-02-02markrtiny50000010000000---0.044--3.626%
2015-11-21SergiosiManual testing500000010000000012---0.437--6.977%
2018-03-31Jocelyn Larouchelow 4M11525271152527---0.050--2.095%
2018-04-29Jocelyn Larouchelow 4M115252711525270012---0.317--6.226%
2018-10-12Jocelyn Larouchelow 4M115252712677797012---0.344--6.317%
2022-10-11Numberwangcolab1190005455850400---12.78--6.930%
2022-11-12Jocelyn LaroucheManual testing115252712482419950---29.27--10.903%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1999-07-12ANONYMOUSv4_computers21256--0.008--
2001-11-14ANONYMOUSv4_computers21257--0.017--
2003-05-04ANONYMOUSv4_computers21258--0.033--
2016-02-23Mark RoseManual testing258260--0.100--
2009-02-15Sturle Sundekrebs.ifi260261--0.133--
2011-05-09XyzzyManual testing261262--0.267--
2012-10-07dbaughManual testing262263--0.852--
2014-12-28Matthias WurtingerManual testing263264--1.703--
2015-01-10lycornManual testing264265--3.242--
2015-08-10omylistManual testing265266--6.484--
2017-02-28Smok_bmvManual testing266267--12.97--
2019-10-21_p95holder_Manual testing267268--25.94--
2021-10-05MadPooManual testing268269--51.87--


ECM factoring results:
Total ECM effort:17.750 GHz-days
Estimated T-Level:25.658
DigitsB1CompleteFacMiss
201100014.8080.000%
25500001.62019.795%
302500000.13287.678%
3510000000.00999.129%


ECM Summary

B1B2factorcurvesGHz-days
5000050000002819.96
25000025000000447.795


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1997-01-01Larry DeemB80891DC833136970.034
2002-07-14ANONYMOUSv4_computersB80891DC833136970.034
2016-06-01MadPooManual testingB80891DC833136970.034


PRP results:
dateuseridcompidcofactorsres64PRP
2020-11-05Ethan O'ConnorHighland2020A0E053C3DB2D51E4no


P-1 factor-bounds graph:
B1 = 1152527, B2 = 12482419950 (P-1 stage 2)
B1 = 119000, B2 = 5455850400 (P-1 stage 2)
B1 = 5000000, B2 = 100000000 (P-1 stage 2)
B1 = 1152527, B2 = 126777970 (P-1 stage 2)
B1 = 1152527, B2 = 115252700 (P-1 stage 2)
B1 = 5000000 (P-1 stage 1)
B1 = 1152527 (P-1 stage 1)
B1 = 500000, B2 = 10000000 (P-1 stage 2)
B1 = 500000 (P-1 stage 1)
B1 = 119000 (P-1 stage 1)
B1 = 50000, B2 = 1000000 (P-1 stage 2)
B1 = 50000 (P-1 stage 1)
B1 = 4000 (P-1 stage 1)
B1 = 1000 (P-1 stage 1)
102
103
104
105
106
107
102
103
104
105
106
107
108
109
1010
1011
TF factor-bounds graph:
269
268
267
266
265
264
263
262
261
260
258
257
256
this exponent TF target: 60
TF double-checked to: 67.8
ECM T-Level=25.66 ~= 69-bit
250
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270
Last modified: 2023-06-05T21:50:05+00:00