is 2 4808369 - 1
has 1447464 decimal digits
takes 0.633 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-LE804B970ED22405Bdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2676.179665.6716%250002812500.00741.3117%6.187166.1219%0.4503%
PrimeNet2610.063962.2951%200004500000.00833.2256%0.072263.5113%1.2162%
GPU722651.517364.6154%320006500000.01252.3229%1.529865.4373%0.8219%
Difference+2+4.6623+1.0563%-7000-368750-0.0051-1.0112%+4.6572+0.6846%+0.6846%

Known prime factors (1 factor, 75.9 bits, 0.00157842% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
4808369703093835001870304615992375.8967311146825481471
33 × 7 × 23 × 29 × 129169 × 448993
2010-03-211291694489932,828.30.02800.0502

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2000-07-12T00:00:00ANONYMOUSv4_computers25000281250---0.007--1.312%


Trial Factoring results:
No TF results for M4808369


ECM factoring results:

Old Calculation Method

Total ECM effort:0.000 GHz-days
DigitsB1CurvesCompleteFacMiss

New Calculation Method

Total ECM effort:0.000 GHz-days
DigitsB1CompleteFacMiss


ECM Summary

B1B2factorcurvesGHz-days
10.00000e+0


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2000-08-10T00:00:00ANONYMOUSv4_computersE804B970ED22405B0.633


PRP results:
dateuseridcompidcofactorsres64PRP
2017-11-19T19:32:06kkmrkkblmbrbkc4.xlarge
70309383500187030461599
D3A280DF18B913__no
2018-03-24T23:47:21treborLaptop
70309383500187030461599
D3A280DF18B913__no


P-1 factor-bounds graph:
B1 = 25000, B2 = 281250 (P-1 stage 2)
B1 = 25000 (P-1 stage 1)
103
104
105
106
103
104
105
106
TF factor-bounds graph:
267
250
260
270
280
290
2100
Last modified: 2018-03-24T23:47:21+00:00