is 2 45721331 - 1
has 13763493 decimal digits
takes 73.382 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
Actual2705.226262.8571%490000106575002.42955.2301%7.655764.7997%1.9426%
PrimeNet2681.303761.7647%20000080000001.45445.4208%2.758163.8374%2.0726%
GPU7227220.916663.8889%320000100000001.97214.0296%22.888665.3440%1.4551%
Difference-2-15.6903-1.0317%+170000+657500+0.4574+1.2005%-15.2329-0.5443%-0.5443%

Known prime factors (1 factor, 70.8 bits, 0.00015487% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
4572133120687760718603504036872270.80922623751612353
3 × 61 × 90031 × 1373161
2012-09-109003113731617.36920.37220.4264

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2012-09-10T16:51:00Jwb52zClay490000106575002270.8092.430146.84.8595.230%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2000-12-14T00:00:00Jocelyn Larouchev4_computers21254--5.24886e-5--
2007-02-20T00:00:001997rj7v4_computers21263--0.035--
2007-12-31T00:00:00RMAC9.5v4_computers21268--1.304--
2011-10-26T20:06:00DubslowManual testing268269--1.308--
2011-10-26T20:06:00DubslowManual testing269270--2.615--


ECM factoring results:
No ECM results for M45721331


Lucas-Lehmer results:
No L-L results for M45721331


PRP results:
No PRP results for M45721331


P-1 factor-bounds graph:
B1 = 490000, B2 = 10657500 (P-1 stage 2)
B1 = 490000 (P-1 stage 1)
103
104
105
106
103
104
105
106
107
108
TF factor-bounds graph:
270
269
268
263
254
250
260
270
280
290
2100
Last modified: 2012-09-10T16:51:54+00:00