locating the visa number

[FlyingDagger]

On my very first H-1B visa stamp, there is a "control Number" on the
up-right corner, then a 8-digit number between the expiry date and the
approval date, then a "P#" below the petitioner (my employer), like
WAC-(10-digit), and finally a long string of number-letter on the
bottom, consisting the passport #, my birthday and some other code.
Could anyone tell me which one is the visa #?

[immihelp]

Look at https://www.immihelp.com/usa-visas/images/usvisa.gif and look just below 1001 and right of red arrow.