is 2 99621787 - 1
has 29989147 decimal digits
takes 379.946 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
Actual277307.243764.9351%7600007600004.20291.3606%311.446665.4122%0.4771%
PrimeNet2729.599662.5000%400000200000008.11755.1968%17.717164.4488%1.9488%
GPU72276153.621064.4737%6500002200000010.02733.8386%163.648265.8374%1.3637%
Difference+1+153.6227+0.4614%+110000-21240000-5.8244-2.4780%+147.7984-0.4253%-0.4253%

Known prime factors (1 factor, 105.0 bits, 0.00010537% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
996217873976314630433886346427512926407332104.971199570533222511173506028
22 × 3 × 75 × 109 × 367 × 5647 × 15881 × 275827
2020-07-08168072758271.312e+90.17100.1892

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2020-07-08T18:46:39Jwb52zClay76000076000032104.9714.203759.98.4061.361%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2010-11-03T02:36:001997rj7Manual testing264265--0.038--
2012-09-01T02:17:00Jimmy BrüggemanniMac2265266--0.075--
2013-08-16T19:31:00america64Manual testing266267--0.150--
2013-08-18T18:32:00PascalBieriManual testing267268--0.300--
2013-08-21T13:07:00BruceManual testing268269--0.600--
2014-05-20T16:34:00S46055ordi_papa269270--1.200--
2014-05-25T21:46:00PascalBieriManual testing270271--2.400--
2017-02-03T06:09:50monstManual testing271272--4.801--
2019-04-01T15:45:27Niels_Mache_NextcloudManual testing272273--9.60--
2019-12-16T11:26:26Hans LoeblichManual testing273274--19.20--
2020-03-22T13:18:10LaurVManual testing274275--38.41--
2020-07-02T23:23:02riccardo ubertiGPU72_TF275276--76.81--
2020-07-06T17:20:071997rj7Manual testing276277--153.6--


ECM factoring results:
No ECM results for M99621787


Lucas-Lehmer results:
No L-L results for M99621787


PRP results:
No PRP results for M99621787


P-1 factor-bounds graph:
B1 = 760000 (P-1 stage 1)
103
104
105
106
103
104
105
106
TF factor-bounds graph:
277
276
275
274
273
272
271
270
269
268
267
266
265
250
260
270
280
290
2100
2110
Last modified: 2020-07-08T19:33:39+00:00