is 2 13577 - 1
has 4088 decimal digits
takes 0.000 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual2672,188.548179.1045%810000000031521845619113850491,130.057136.5826%493,318.605286.7486%
Target2440.000268.1818%500500000.00001.3876%0.000268.6233%
Difference+23+2,188.5479+10.9227%+8099999500+31521845619063850+491,130.0571+35.1951%+493,318.6050+18.1253%

Known prime factors (4 factors, 278.4 bits, 2.05030070% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1357781463516.3143
3
-136.434e-133.171e-105.820e-10
13577207429407927.6287639
7639
2008-08-26176392.178e-91.193e-72.223e-7
1357771753002663435960788094872582.569264244688309037198159
32 × 167 × 175811502534289553
2008-08-29167175811502534289553133,649,3882,739,2415,116,139
13577517423574467242261196840535400118988827216501746151.858190551511551610172054518868454046913466604
22 × 19 × 29 × 53 × 113 × 227 × 2647 × 17159 × 227444621 × 6156006246265999
2023-05-2022744462161560062462659991.192e+1395,914179,141

11 Composite Factors:
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2022-02-06Lisander ViaeneManual testing5000050000-
skipped known factor: 81463
skipped known factor: 207429407
--1.42986e-5--0.206%
2023-02-11USAFSS6917th_Scty_Sq6000000727565939100-
skipped known factor: 81463
skipped known factor: 207429407
--11.34--14.557%
2023-05-19JacobZGreatLakes81000000003152184561911385046151.858491,1305.35537e-6982,26036.583%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2008-08-26ANONYMOUSManual testing??27.62898.60579e-100.0005.72906e-8


ECM factoring results:
Total ECM effort:401.364 GHz-days
Estimated T-Level:39.386
DigitsB1CompleteFacMiss
2011000951.4670.000%
2550000223.6610.000%
3025000043.6200.000%
3510000006.7870.113%
4030000000.87741.596%
45110000000.09890.698%
50440000000.01099.052%


ECM Summary

B1B2factorcurvesGHz-days
10.00000e+0
5000050000001480.030
250000250000005510.567
50000050000000100.021
10000001000000001,4215.848
30000003000000001,28815.90
3000000229727998501,200379.0


Lucas-Lehmer results:
No L-L results for M13577


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-21Oliver KruseOliver-PC
81463
207429407
7175300266343596078809487
8852C16AA96FC527no
2017-09-21Oliver KruseManual testing
81463
207429407
7175300266343596078809487
8852C16AA96FC527no
2017-10-02kkmrkkblmbrbkManual testing
81463
207429407
7175300266343596078809487
8852C16AA96FC5__no
2017-12-07ATHManual testing
81463
207429407
7175300266343596078809487
8852C16AA96FC5__no
2020-04-17Oliver KruseManual testing
81463
207429407
7175300266343596078809487
A7D874B1F2691B__no
2023-05-19JacobZGreatLakes
81463
207429407
7175300266343596078809487
5174235744672422611968405354001189888272165017
A7D874B1F2691B8Cno


P-1 factor-bounds graph:
B1 = 8100000000, B2 = 31521845619113850 (P-1 stage 2)
B1 = 6000000, B2 = 727565939100 (P-1 stage 2)
B1 = 8100000000 (P-1 stage 1)
B1 = 6000000 (P-1 stage 1)
B1 = 50000 (P-1 stage 1)
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TF factor-bounds graph:
2
this exponent TF target: 44
TF double-checked to: 67.9
ECM T-Level=39.39 ~= 114-bit
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Last modified: 2023-09-25T11:53:03+00:00