Check if a given number in an array of numbers is -
Equidigital Number - A number that has the same number of digits as the number of digits in its prime factorization. Out - 1
Extravagant Number - A number that has fewer digits than the number of digits in its prime factorization. Out - 4
Frugal Number - A number that has the more number of digits as the number of digits in its prime factorization. Out - 125
See the test suite for bans/restrictions and more clarity.
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Notice that 720 = 2^4*3^2*5 has 5 digits in its prime factorization (not 7).