Quote from: WanderingPhilospher on Today at 03:31:50 PM

Quote from: elisacat on Today at 03:26:58 PM

Quote from: WanderingPhilospher on Today at 03:10:32 PM

Quote from: elisacat on Today at 10:39:50 AM

Just trying to do some math gymnastics to understand how the previous solutions worked (e.g. puzzle 53, 54, 55) using only bitcrack (not kanagaroo or other methods) and a fast gpu e.g. RTX 2080
(assuming 1 Billion keys generated per second)
Is my maths correct:

15 characters in 100,000 seconds (28 hours)
16 characters in 1,000,000 seconds (278 hours) 11 days
17 characters in 10,000,000 seconds (2777 hours) 115 days

Calculated by converting the hash to a long number (e.g. 15 characters = 15 digit long number) and dividing it by 1 Billion keys per second to see how long it would take to sequentially reach the final value.

However if the above is correct, then how come puzzle 64 hasn't been solved within 115 days? or faster assuming some users are using multi-gpu? i'm sure my calculation has gone wrong somewhere above but not sure how

for each range, do 2 to the power of the bit range. Example 2 ^64 = 18,446,744,073,709,551,616; now divide that by # of key/s. example; 2 ^ 64 / 1,000,000,000 (1 billion key/s) = 18,446,744,073 seconds = 307,445,734 minutes = 5,124,095 hours = 213,503 days = 584 years . I think that math is accurate. but basically 2^64 / 1000000000 / 86400 (seconds in a day) = 213,503 days / 365 (days in a year) = 584 years

Thanks. But using the example of puzzle 64, most of the hex values are just zeroes so only 16 characters are used for calculation
so if i use your calculation:
2^16 / 1000000000 (per/second key rate of a fast bitcrack) /86400 would be the correct formula right? but that produces a number in the sub decimal i.e. hours in total to calculate puzzle 64

I don't understand what you mean by most hex values are just zeroes...for the 64 bit range, The leading hex character will be somewhere in the 8 through F range and the remaining 15 characters will be in the 0 through F range.

Look at it like this; starting 64 bit range in hex, is 8000000000000000 and the last is FFFFFFFFFFFFFFFF; SO 8000000000000000 then 8000000000000001, then 8000000000000002, all the way to FFFFFFFFFFFFFFFF