- The 19th Gaussian Prime is 151.
- 151st Emirp is 7121.
- 7121 is the 359th Regular Prime.
- 7121 is the 912th Prime.
- 912 is the sum of the frequencies of الر (Alif, Lam, Ra) in Surah 15.
- 7121 is the 448th Pythagorean Prime.
- 448 is the 361st Composite.
- 361 is the 114th Semi-Prime.
- 359 is the 19th Emirp,
- Its Emirp is 953.
- 953rd Composite is 1143.
- 1143 = 9 × 127.
