@Derektionary profile picture
Derek Orr @Derektionary

PhD Math biology • MS Number theory • BS Math/Phys • Tutor • Sudoku • OEIS editor • Author • 90% RTs. Erdős number 4 #H2P #BLM

Joined April 2013
  • Tweets 147,686
  • Following 193
  • Followers 1,592
Photos and videos

This account's tweets are protected.

Only confirmed followers have access to @Derektionary's tweets.