A000040The prime numbers.

2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, …

The first 3 terms appear at position 698.

…495853710507922796892589235420199561121290219608640…
position 698
termsstringfirst positionoccurrences
126100,002,410
2231610,000,834
3235698999,505
4235715,070100,056
5235711366,7531,003
6235711138,157,77712
72357111317not within 1,000,000,0000
8235711131719not within 1,000,000,0000

Searched the first 1,000,000,000 digits. Strings longer than 12 digits are not indexed.