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olivier@rubeus:~$ giac
Using locale /usr/share/locale/
// Using keyword file /usr/share/giac/doc/fr/keywords
Added 110 synonyms
Welcome to giac readline interface
(c) 2001,2008 B. Parisse & others
Homepage http://www-fourier.ujf-grenoble.fr/~parisse/giac.html
Released under the GPL license 3.0 or above
See http://www.gnu.org for license details
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Press CTRL and D simultaneously to finish session
Type ?commandname for help
0>> ifactor(11111111111)
2*1020233*5306812608761
// Time 0.09
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1>> ifactor(2^32)
1
// Time 0.02