7 things about the number 13

Today is Friday the 13th, so here is some stuff on the number 13

1. 13 is the atomic number aluminium
2. There are 13 zodiac constellations, which consist of the 12 signs in the astrological zodiac and Ophiuchus
3. 13 is the ASCII and Unicode value for carriage return
4. 13 it is the smallest integer with eight letters in its spelled out name in English
5. The 13th letter of the greek alphabet is 'Nu'
6. The Korn album 'Follow the Leader' starts on track 13
7. Chromosome 13 is the largest human acrocentric chromosome