A traumatised nation stopped for a minute's silence at midday (1100 GMT) to honour at least 129 people killed in the unprecedented assault on Paris nightspots and the national stadium.
Thousands paused in the streets and President Francois Hollande observed the silence at the Sorbonne University, in recognition of the large number of young victims.
In Place de la Republique, close to the Bataclan concert hall which suffered the worst bloodshed, 55-year-old caretaker Kenza wept as she reflected on the carnage that took place 200 metres away.
Investigators identified two more attackers involved in the attack, including a Frenchman previously charged with planning a terror attack and a suicide bomber found with a Syrian passport, although the document's authenticity has yet to be verified.
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Police conducted "several dozen" raids across France while Belgian police launched a new operation in a radical hotspot where some of the attackers are thought to have lived.
In the southeastern French city of Lyon, police found "an arsenal of weapons," including a rocket launcher and Kalashnikov assault rifle.
As authorities scrambled to find those responsible, the grieving French tried to return to the humdrum of daily life.
Mountains of flowers and candles have been laid at the scenes of the attacks and in front of businesses that lost loved ones.
"We need to understand how this barbarism can exist and why France is paying this heavy price," David Boy, a 52-year-old advertising agency boss said, his lips trembling as he lingered at one of the memorials on his way to work.
Culture minister Fleur Pellerin said a special fund would help get live entertainment back on its feet and help with the cost of new security measures, while a social media campaign has called on everyone to visit cafes and bars on Tuesday night.
In the face of "barbarism... Culture is our biggest shield and our artists our best weapon," said Pellerin.
The rector of the Great Mosque of Paris, Dalil Boubakeur, called for all French imams to lead "a solemn prayer" for the victims on Friday.