is 2 61367717 - 1
has 18473524 decimal digits
takes 144.157 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
Actual27331.170264.3836%580000107300003.85924.1419%35.029465.8587%1.4752%
PrimeNet2703.893862.8571%260000120000003.06435.1360%6.958064.7648%1.9077%
GPU7227462.343364.8649%400000130000003.70073.7169%66.044066.1708%1.3059%
Difference-1-31.1731-0.4813%+180000-2270000+0.1584+0.4249%-31.0146-0.3121%-0.3121%

Known prime factors (1 factor, 76.1 bits, 0.00012403% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
61367717818430813384002114624472376.115666825208263819
33 × 11 × 79 × 41887 × 678499
2013-02-1141887678499290.350.26080.2904

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2013-02-11T11:19:00Jwb52zClay580000107300002376.1153.859288.37.7184.142%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2003-06-17T00:00:00ANONYMOUSv4_computers21259--0.001--
2003-10-23T00:00:00ANONYMOUSv4_computers21260--0.003--
2004-04-09T00:00:00ANONYMOUSv4_computers21262--0.010--
2022-03-29T23:11:26LordJuliusManual testing262263--0.016--
2009-04-07T03:58:00KYOJI_KAMEISparky263264--0.032--
2009-04-30T04:18:00ANONYMOUSprimebuster264265--0.061--
2009-07-23T02:30:00David Barleyold_ken265266--0.122--
2009-07-28T15:33:00Math Fan HeaterP3-1200-512M266267--0.244--
2009-08-12T17:52:00EledillWS020342267268--0.487--
2009-09-23T16:09:00EledillWS020342268269--0.974--
2012-05-12T19:19:00Serge BatalovManual testing269270--1.948--
2012-05-12T19:19:00Serge BatalovManual testing270271--3.897--
2012-05-12T21:29:00Serge BatalovManual testing271272--7.793--
2013-01-22T20:39:00AntonioKManual testing272273--15.59--


ECM factoring results:
No ECM results for M61367717


Lucas-Lehmer results:
No L-L results for M61367717


PRP results:
No PRP results for M61367717


P-1 factor-bounds graph:
B1 = 580000, B2 = 10730000 (P-1 stage 2)
B1 = 580000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2022-03-29T23:11:26+00:00