Time prediction

[Espresso0org]

How much 8 missing characters from middle gonna take to find with corei7 8700 cpu? Just a estimated time

[Coding-Enthusiast]

If you run example number 7 it will end in a couple of seconds and will give you a good estimate of the speed as keys per second. Then you can compute how much time going through 128,063,081,718,016 would take.
My guess (I don't have corei7 to test) is that it should be roughly 20 days.

Duplicate of #30

[Espresso0org]

Sorry sir i made a mistake.its 7 characters not 8.my pc found 5 characters in the middle about 50min.why 7 and 8 gonna take a lot more time

[Coding-Enthusiast]

my pc found 5 characters in the middle about 50min.

Are you sure your CPU is corei7 8700? My corei3-6100 takes 20 seconds to find 5 missing characters from middle.

why 7 and 8 gonna take a lot more time

I used 60 million key/sec which is the slowest speed. Each missing character increases the total number of keys to check by a factor of 58.

1 missing -> 58  
2 missing -> 58 * 58 = 3,364
3 missing -> 58 * 58 * 58 = 195,112
...
5 missing ->         656,356,768
6 missing ->      38,068,692,544
7 missing ->   2,207,984,167,552
8 missing -> 128,063,081,718,016

[Espresso0org]

Its 7 characters next each other.after 1 day its still 0% . My speed is 10m keys/sec