Starting with polynomial:
P : t
Extension levels are: 1 14
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Trying to find an order 14 Kronrod extension for:
P1 : t
Solvable: 1
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Ending with final polynomial:
P : t^15 - 105/29*t^13 + 455/87*t^11 - 1001/261*t^9 + 1001/667*t^7 - 1001/3335*t^5 + 1001/38019*t^3 - 143/215441*t
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Computing nodes and weights
  current precision for roots: 53
  current precision for roots: 106
 current precision for weights: 53
Linear system for weights solvable: 1
  current precision for roots: 106
  current precision for roots: 212
 current precision for weights: 106
Linear system for weights solvable: 1
Sufficient bits for target precision reached
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The nodes are:
| (0.98799251802048542849 - 1.4769845379254909416e-152j)  +/-  (8.16e-60, 8.16e-60j)
| (-0.57097217260853884754 - 3.3121686421112380675e-167j)  +/-  (6.84e-61, 6.84e-61j)
| (-0.93727339240070590431 - 2.255586845277753124e-165j)  +/-  (1.65e-59, 1.65e-59j)
| (0.57097217260853884754 - 9.2592336823948082425e-165j)  +/-  (7.18e-61, 7.18e-61j)
| (0.93727339240070590431 - 1.0648375519148999647e-175j)  +/-  (1.78e-59, 1.78e-59j)
| (0.72441773136017004742 + 1.6023598956582363194e-183j)  +/-  (4.68e-60, 4.68e-60j)
| (-0.2011940939974345223 - 7.0685851505520998032e-192j)  +/-  (4.39e-63, 4.39e-63j)
| (-0.8482065834104272162 + 5.7933904712990109147e-189j)  +/-  (1.19e-59, 1.19e-59j)
| (-0.3941513470775633699 + 8.630249311720586969e-192j)  +/-  (8.96e-62, 8.96e-62j)
| (0.3941513470775633699 + 1.6780492376008333672e-189j)  +/-  (7.83e-62, 7.83e-62j)
| (0.8482065834104272162 - 1.7009590699725990044e-197j)  +/-  (1.22e-59, 1.22e-59j)
| (0.2011940939974345223 + 2.9748280829386660918e-207j)  +/-  (4.39e-63, 4.39e-63j)
| (-0.98799251802048542849 - 3.4112711792708774083e-209j)  +/-  (8.12e-60, 8.12e-60j)
| (-0.72441773136017004742 + 3.3982011747525981845e-210j)  +/-  (4.31e-60, 4.31e-60j)
| (-1.1157031129694719214e-209 + 7.0696842621601255937e-210j)  +/-  (1.98e-208, 1.98e-208j)
-------------------------------------------------
The weights are:
| (0.030753241996117268355 + 1.8799825630594360582e-152j)  +/-  (4.53e-19, 2.03e-47j)
| (0.16626920581699393355 + 3.5998521705785065423e-153j)  +/-  (1.67e-19, 7.5e-48j)
| (0.070366047488108124709 - 8.0519352102037075718e-154j)  +/-  (1e-19, 4.5e-48j)
| (0.16626920581699393355 + 1.3457478722935068078e-152j)  +/-  (7.34e-20, 3.29e-48j)
| (0.070366047488108124709 - 3.0564636483106334205e-152j)  +/-  (3.88e-20, 1.74e-48j)
| (0.13957067792615431445 - 1.638053804999740361e-152j)  +/-  (5.34e-20, 2.39e-48j)
| (0.19843148532711157646 + 6.1513517985823028194e-153j)  +/-  (6.22e-21, 2.79e-49j)
| (0.10715922046717193501 + 1.5830141031116055926e-153j)  +/-  (1.17e-21, 5.22e-50j)
| (0.18616100001556221103 - 4.8096801148921646456e-153j)  +/-  (5.91e-21, 2.65e-49j)
| (0.18616100001556221103 - 1.1194356654876268468e-152j)  +/-  (2.59e-21, 1.16e-49j)
| (0.10715922046717193501 + 2.0794145575425264312e-152j)  +/-  (2.15e-21, 9.63e-50j)
| (0.19843148532711157646 + 9.2973053597176732886e-153j)  +/-  (9.67e-22, 4.33e-50j)
| (0.030753241996117268355 + 2.2987048024506948702e-154j)  +/-  (3.07e-23, 1.35e-51j)
| (0.13957067792615431445 - 2.5212981664165644674e-153j)  +/-  (2.54e-22, 1.1e-50j)
| (0.20257824192556127288 - 7.6371408508807445494e-153j)  +/-  (3.06e-22, 1.41e-50j)
