is 2 107203427 - 1
has 32271448 decimal digits
takes 439.683 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
-unknown- primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual276142.756664.4737%7570002102300011.06833.9160%153.824865.8649%1.3912%
PrimeNet2728.920762.5000%450000220000009.65865.4092%18.579364.5285%2.0285%
GPU72276142.756664.4737%7000002400000011.71233.9757%154.468965.8861%1.4124%
Difference---+57000-2977000-0.6441-0.0596%-0.6441-0.0212%-0.0212%

Known prime factors (1 factor, 77.8 bits, 0.00007256% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1072034272604299523412751280586632477.7851214653111515153
35 × 929 × 3181 × 1691479
2021-11-0531811691479395.090.56591.0236

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2021-11-05T05:01:59Jwb52zClay757000210230002477.78511.07879.422.143.916%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2010-04-24T14:22:00MartinatMerseaQosmio263264--0.018--
2010-09-07T12:43:00sasaki3ssk_saver264265--0.035--
2012-05-19T04:05:00omiXorpLLB03-z800-20265266--0.070--
2015-05-02T02:45:00Judge HaleManual testing266268--0.418--
2015-05-02T02:45:00Judge HaleManual testing268269--0.558--
2015-05-02T02:45:00Judge HaleManual testing269270--1.115--
2015-05-11T10:17:00symallad6corething270271--2.231--
2018-02-28T18:52:22el groccoManual testing271272--4.461--
2020-03-01T08:04:02el groccoManual testing272273--8.922--
2020-03-13T10:50:11Hans LoeblichManual testing273274--17.84--
2021-04-10T18:09:10TheJudgerManual testing274275--35.69--
2021-04-10T18:09:10TheJudgerManual testing275276--71.38--


ECM factoring results:
No ECM results for M107203427


Lucas-Lehmer results:
No L-L results for M107203427


PRP results:
No PRP results for M107203427


P-1 factor-bounds graph:
B1 = 757000, B2 = 21023000 (P-1 stage 2)
B1 = 757000 (P-1 stage 1)
102
103
104
105
106
102
103
104
105
106
107
108
TF factor-bounds graph:
276
275
274
273
272
271
270
269
268
266
265
264
250
260
270
280
290
2100
Last modified: 2021-11-05T05:01:59+00:00