The number "280" is an integer that follows 279 and precedes 281. It is an even number, meaning it is divisible by 2 without a remainder. In mathematics, 280 can be factored into prime numbers as 2 × 2 × 2 × 5 × 7. In the context of social media, Twitter increased its character limit for tweets from 140 to 280 in 2017. This change allowed users to express their thoughts more fully, accommodating longer messages while still maintaining the platform's concise nature.