Select 2 unique numbers from 1 to 1000000000000000000000000000000000
Total possible combinations (ways)
If order does not matter (e.g. most lottery numbers): 499,999,999,999,999,972,661,166,934,123,722,562,854,823,285,010,623,962,332,920,807,424 (~5.0E+47 million trillion)
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 999,999,999,999,999,945,322,333,868,247,445,125,709,646,570,021,247,924,665,841,614,848 (~1.0E+48 million trillion)
If order does not matter (e.g. most lottery numbers): 499,999,999,999,999,972,661,166,934,123,722,562,854,823,285,010,623,962,332,920,807,424 (~5.0E+47 million trillion)
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 999,999,999,999,999,945,322,333,868,247,445,125,709,646,570,021,247,924,665,841,614,848 (~1.0E+48 million trillion)