is 2 74683031 - 1
has 22481833 decimal digits
takes 206.476 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
Actual275102.458564.0000%6150006150002.46541.4963%104.923964.5387%0.5387%
PrimeNet2703.199561.4286%320000140000004.27075.5546%7.470263.5710%2.1425%
GPU7227451.228063.5135%500000170000005.60824.1361%56.836265.0226%1.5091%
Difference+1+51.2304+0.4865%+115000-16385000-3.1428-2.6398%+48.0876-0.4840%-0.4840%

Known prime factors (1 factor, 85.2 bits, 0.00011409% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
74683031446643502483809044768191932685.207299026095020038116
22 × 33 × 163 × 10259 × 31799 × 52069
2016-02-273179952069130,2640.13190.2594

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2016-02-27T03:35:30Jwb52zClay6150006150002685.2072.465413.04.9311.496%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2002-04-20T00:00:00Jocelyn Larouchev4_computers21257--0.000--
Missing TF 57 - 58
Missing TF 58 - 59
Missing TF 59 - 60
Missing TF 60 - 61
Missing TF 61 - 62
Missing TF 62 - 63
Missing TF 63 - 64
2010-09-09T12:28:00birkovv264265--0.050--
2010-09-09T16:08:00ANONYMOUSSimon265266--0.100--
2010-09-11T06:02:00ANONYMOUS266267--0.200--
2010-11-15T01:12:00Charles A. Morrisnimbus267268--0.400--
2010-11-18T07:15:00ANONYMOUS268269--0.800--
2013-05-13T15:52:00PascalBieriManual testing269270--1.601--
2013-07-05T05:41:00Le ComteManual testing270271--3.202--
2015-08-26T07:37:00FredrikManual testing271272--6.404--
2016-02-16T09:50:14AirSquirrelsManual testing272273--12.81--
2016-02-16T10:50:15AirSquirrelsManual testing273274--25.62--
2016-02-16T12:50:16AirSquirrelsManual testing274275--51.23--


ECM factoring results:
No ECM results for M74683031


Lucas-Lehmer results:
No L-L results for M74683031


PRP results:
No PRP results for M74683031


P-1 factor-bounds graph:
B1 = 615000 (P-1 stage 1)
103
104
105
106
103
104
105
106
TF factor-bounds graph:
275
274
273
272
271
270
269
268
267
266
265
257
250
260
270
280
290
2100
Last modified: 2016-02-27T03:35:30+00:00