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F. Mac\\'ias-P\\'erez, J. Goupy, K. Schuster, L. Bing, L. Perotto, M. B\\'ethermin, M. Calvo, M. De Petris, M. Mu\\~noz-Echeverr\\'ia, N. Billot, N. Ponthieu, O. Bourrion, P. Ade, P. Andr\\'e, P. Lustig, P. Mauskopf, R. Adam, R. Zylka, S. Berta, S. Doyle, S. Leclercq, V. Rev\\'eret","submitted_at":"2023-05-11T18:00:03Z","abstract_excerpt":"Aims. Deep millimeter surveys are necessary to probe the dust-obscured galaxies at high redshift. We conducted a large observing program at 1.2 and 2 mm with the NIKA2 camera installed on the IRAM 30-meter telescope. This NIKA2 Cosmological Legacy Survey (N2CLS) covers two emblematic fields: GOODS-N and COSMOS. We introduce the N2CLS survey and present new 1.2 and 2 mm number count measurements based on the tiered N2CLS observations from October 2017 to May 2021.\n  Methods. 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