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Old 2020-05-25, 18:33   #2390
chris2be8
 
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Sep 2009

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QUEUED AS f60_139p1

(60^139+1)/18924538895094173590486205353126380934023150856938867764485304166767932217 from the Brent tables:
Code:
# Built Mon May 25 06:50:21 2020
# Estimated SNFS difficulty 248, GNFS equivalent 179, GNFS difficulty 174, degree 6
n: 769127778152103165154736490678654163191500825566252163801414247369393532157036623817582338165149149488519173170231565757182084245725706660322010928434679289212202552984652553
type: snfs
c6: 60
c0: 1
# Y0 = 60^23
Y0: 78973022305360281600000000000000000000000
# Y1 = 1^0
Y1: 1
# msieve rating: skew 0.51, size 3.314e-12, alpha 0.783, combined = 2.848e-13 rroots = 0
skew: 0.5054
rlim: 134000000
alim: 134000000
lpbr: 31
lpba: 31
mfbr: 91
mfba: 62
rlambda: 3.5
alambda: 2.6
Seive with 14e from 20M to 170M on the algebraic side.

Test sieving 10k blocks:
Code:
  Q  yield
 20M 23064
 80M 15372
134M 14543
160M 13745
220M 13335
I considered using GNFS, but the SNFS poly's e-score is better than the record for a c174.

Chris

Last fiddled with by swellman on 2020-05-26 at 16:26
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