Pervomaysky () is a rural locality (a settlement) and the administrative center of Timiryazevsky Selsoviet of Mamontovsky District, Altai Krai, Russia. The population was 666 in 2016.Численность населения Российской Федерации по муниципальным образованиям на 1 января 2016 года There are 11 streets.

Geography Pervomaysky is located 36 km north of Mamontovo (the district's administrative centre) by road. Komsomolsky is the nearest rural locality.Расстояние от Первомайского до Мамонтова

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