Caitanya Mahāprabhu’s student life was known as Nimāi Paṇḍita. His mother gave a very beloved name, Nimāi, because He took His birth underneath a tree, nim tree.
(740108 – Lecture SB 01.16.11 – Los Angeles)

Lord Śrī Kṛṣṇa Caitanya Mahāprabhu is the Personality of Godhead Himself, and therefore I offer innumerable prostrations at His lotus feet.
(CC Adi 1.42)

Lord Caitanya Mahāprabhu lived in the Navadvīpa area for twenty-four years, and He induced every person to chant the Hare Kṛṣṇa mahā-mantra and thus merge in love of Kṛṣṇa.
(CC Adi 13.33)

Lord Śrī Caitanya Mahāprabhu, adventing Himself in Navadvīpa, was visible for forty-eight years, enjoying His pastimes.
(CC Adi 13.8)

Lord Śrī Caitanya Mahāprabhu, the great apostle of love of God and the father of the congregational chanting of the holy name of the Lord, advented Himself at Śrīdhāma Māyāpura, a quarter in the city of Navadvīpa in Bengal, on the Phālgunī Pūrṇimā evening in the year 1407 Śakābda (corresponding to February 1486 by the Christian calendar).…Lord Śrī Caitanya Mahāprabhu exhibited His transcendental activities for forty-eight years and then disappeared in the year 1455 Śakābda at Purī.
(SB introduction)

We are just trying to introduce Kṛṣṇa, following the orders of Śrī Caitanya Mahāprabhu, who appeared five hundred years ago. He is Kṛṣṇa, and He wanted this Kṛṣṇa consciousness to be spread all over the world
(Śrī Caitanya-bhāgavata, Antya-khaṇḍa 4.126):
“In every town and village throughout the world,” said Lord Caitanya, “the chanting of My holy name will be heard.” Kṛṣṇa is not just for India. He is for everyone, because He is God.
(Civilization and Transcendence 13 – The Way to Peace)