is 2 62990033 - 1
has 18961890 decimal digits
takes 147.968 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
Actual27330.367464.3836%5900005900002.00961.8069%32.377065.0271%0.6436%
PrimeNet2703.793562.8571%260000120000003.06435.1527%6.857764.7710%1.9139%
GPU7227460.737664.8649%400000130000003.70073.7293%64.438466.1752%1.3103%
Difference-1-30.3702-0.4813%+190000-12410000-1.6911-1.9223%-32.0613-1.1480%-1.1480%

Known prime factors (1 factor, 73.7 bits, 0.00011695% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
62990033150188731428411623480812373.669119216266665880
23 × 5 × 31 × 37 × 47 × 197 × 280639
2013-07-1219728063936.9410.05270.0973

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2013-07-12T23:09:00Jwb52zClay5900005900002373.6692.010295.94.0191.807%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2003-07-21T00:00:00ANONYMOUSv4_computers21259--0.001--
2022-03-30T03:14:35LordJuliusManual testing21263--0.025--
2009-02-05T20:05:00Wojciech Florekarmada4263264--0.031--
2009-02-19T05:25:00riccardo ubertiNeoCrunchDuo264265--0.059--
2009-02-25T14:37:00riccardo ubertiAthlonCrunch265266--0.119--
2009-08-07T21:54:00Sturle Sundegluck.ifi266267--0.237--
2009-08-12T14:10:00arnaudSRV-240267268--0.475--
2009-08-13T12:51:00Aleksey Osadchiysl_tlg268269--0.949--
2011-12-22T17:58:00tmorrowParagone269270--1.898--
2012-10-31T06:29:00GrunwalderGIMPcompute-0-3270271--3.796--
2013-04-11T22:06:00kdgehmanManual testing271272--7.593--
2013-04-11T22:06:00kdgehmanManual testing272273--15.19--


ECM factoring results:
No ECM results for M62990033


Lucas-Lehmer results:
No L-L results for M62990033


PRP results:
No PRP results for M62990033


P-1 factor-bounds graph:
B1 = 590000 (P-1 stage 1)
101
102
103
104
105
106
101
102
103
104
105
106
TF factor-bounds graph:
273
272
271
270
269
268
267
266
265
264
263
259
250
260
270
280
290
2100
Last modified: 2022-03-30T03:14:35+00:00