These are as follows:
- Starting from 00A 000001 to 00A 1000000; 10 lakh notes in prefix digit.
- Starting from 00A 000001 to 99A 1000000; 10 crore notes in 100 prefix number with one Alphabet letter.
- There are 20 alphabets used as prefix digit in currency notes to define different number variety circulated by Reserve Bank India.
A, B, C, D, E, F, G, H, K, L, M, N, P, Q, R, S, T, U, V & W.
Total 200 crore notes (10 crore x 20 prefix = 200 crore notes are in one Insert letter)