Find all pairs (p, q) of prime numbers satisfying
2p = 2q-2 + q!
Correct Solutions by,
- Toshihiro Shimizu Kawasaki, Japan
- Mustafa Burak Topal Boğaziçi University
- Vedat Deveci İstanbul
- Albert Stadler Herrliberg, Switzerland
- Gurt Dovletov The State Energy Instıtute of Turkmenıstan
- Lujain Qazmanny Jordan
- Cüneyd Öztürk Bilkent University
- Alper Balcı Bilkent University
- Mehmet Koca Boğaziçi University
- Roger Bengtsson Lund, Sweden
- Mümtaz Ulaş Keskin Erciyes University
- Adem Limani Lund University, Sweden
- Magnus Jakobsson Lund, Sweden
- Deniz Can Karaçelebi Çiçekliköy 50. Yıl Fen ve Teknoloji Lisesi
- Lim Chang Kiat Singapore
- Ritwik Chaudhuri
Solution: http://www.fen.bilkent.edu.tr/~cvmath/Problem/2203a.pdf