is 2 61506463 - 1
has 18515291 decimal digits
takes 144.483 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
Actual27331.099964.3836%580000107300003.85924.1430%34.959165.8592%1.4756%
PrimeNet2703.885062.8571%260000120000003.06435.1375%6.949264.7653%1.9082%
GPU7227462.202764.8649%400000130000003.70073.7180%65.903466.1712%1.3063%
Difference-1-31.1028-0.4813%+180000-2270000+0.1584+0.4250%-30.9443-0.3120%-0.3120%

Known prime factors (1 factor, 75.0 bits, 0.00012199% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
61506463386596222680485489905192375.033314272845343493
29 × 163 × 9467 × 7022777
2013-04-1894677022777127.451.33382.4341

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2013-04-18T08:39:00Jwb52zClay580000107300002375.0333.859289.07.7184.143%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2003-06-06T00:00:00ANONYMOUSv4_computers21259--0.001--
2003-11-08T00:00:00ANONYMOUSv4_computers21260--0.002--
2004-04-09T00:00:00ANONYMOUSv4_computers21262--0.010--
2022-03-29T23:11:41LordJuliusManual testing262263--0.016--
2009-04-10T15:34:00cnaTb_xo4yManual testing263264--0.032--
2009-07-24T06:36:00unconnecteddual-E5335264265--0.061--
2009-09-23T05:35:00ANONYMOUS265266--0.121--
2009-09-25T04:38:00ANONYMOUS266267--0.243--
2009-09-30T08:09:00Jonathan CrombieAthlon800267268--0.486--
2009-10-15T05:22:00Team Prime Ribpakaran_laptop268269--0.972--
2011-12-19T16:09:00subgeniusHDO-c1269270--1.944--
2012-09-06T01:21:00Clown_RoyalManual testing270271--3.888--
2013-02-06T12:51:00MikeBerlinManual testing271272--7.776--
2013-02-06T12:52:00MikeBerlinManual testing272273--15.55--


ECM factoring results:
No ECM results for M61506463


Lucas-Lehmer results:
No L-L results for M61506463


PRP results:
No PRP results for M61506463


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: 2022-03-29T23:11:41+00:00