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Old 2021-04-18, 23:07   #122
swellman
 
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Jun 2012

32×331 Posts
Default HCN 10+9_262

Code:
n: 586530402103973325556065792109864916391207034881748153146410519600052941295018697501090050321314392892537214864006025410069481248829382565581599518002294972128036145311354035377661026460963240989
# 10^262+9^262, difficulty: 264.00, anorm: 1.80e+038, rnorm: 9.73e+049
# scaled difficulty: 265.96, suggest sieving rational side
# size = 2.828e-013, alpha = 0.000, combined = 4.624e-014, rroots = 0
type: snfs
size: 264
skew: 1.0357
c6: 81
c0: 100
Y1: -969773729787523602876821942164080815560161
Y0: 100000000000000000000000000000000000000000000
rlim: 200000000
alim: 200000000
lpbr: 32
lpba: 32
mfbr: 94
mfba: 64
rlambda: 3.6
alambda: 2.8

Test sieving with 15e on the -r side, with Q in blocks of 2000:
Code:
40M 7683 
70M 6474
100M 5668
150M 4639
200M 4317
250M 3989
Suggesting a Q range of 40-220M with a target # rels = 470M+ (raw).
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Old 2021-04-19, 16:08   #123
chris2be8
 
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Sep 2009

2·5·7·29 Posts
Default

QUEUED AS f20_194p1

(20^194+1)/14561317396390049 from the Brent tables:
Code:
# Built Sun Apr 18 17:08:39 2021
# Estimated SNFS difficulty 254, GNFS equivalent 182, GNFS difficulty 237, degree 6
n: 172432248113563149996587614811308077325245213241073921508175355344040445969509197840030305104936126173849439860257009387967509814537982670613388667687682780289358855702736847869475778798919798091272931392827740294602045684701505745732449
type: snfs
c6: 25
c0: 4
# Y0 = 20^32*2
Y0: 858993459200000000000000000000000000000000
# Y1 = 1^0
Y1: 1
# msieve rating: skew 0.74, size 1.274e-12, alpha 1.675, combined = 1.420e-13 rroots = 0
skew: 0.737
rlim: 134000000
alim: 134000000
lpbr: 31
lpba: 31
mfbr: 62
mfba: 62
rlambda: 2.6
alambda: 2.6
Sieve on 15e_small from 34M to 148M on the rational side.

Test sieving 10k ranges:
Code:
  Q  yield
 34M 23084
 84M 19189
134M 16643
184M 14559
I'll do the LA.

Chris

Last fiddled with by swellman on 2021-04-19 at 19:35
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