- The 19th quad-prime is 150
- The 114th composite is 150.
- The 150th composite is 195.
- 195 is the numerical value of K (20) + Ha (5) + Y (10) + Ayn (70) + Saad (90) in sura 19.
- Primes of the type where p and p + 2 = p1 × p2
- The 195th such prime is 3491.
- 3491 is the number of verses in the un-initialed suras.
