During which century did muhammad receive his first revelation from god? the 100s

Muhammad's (p.b.u.h), at the age of 40 years, received His first revelation from the God in 610 AD. Angel Jibril Gabriel visited The Prophet of God and revealed the message of God starting from the Arabic word IQRA, which mean read. This was the time when the Prophet was given orders by God to reveal the truth to the people and guide them with to the principles of Islam. Later, the friends of the Prophet gathered all the revelations in the form of a proper book called QURAN. It consists of 30 chapters.

Well , Muhammad receive his first revelation from God at the year of 610. Which mean that muhammad received his first revelation from God in the 7th Century. Hope this helps