λ
Ratio Atlas

20,177,161

20177161
Deficient Odd Prime

20,177,161 factors as 20177161. Its 2 positive divisors give a proper-divisor sum of 1, so this integer is deficient. The Collatz stopping time is 146 steps.

Prime Factor Structure

Factorization String 20177161
Distinct Prime Factors 1
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 2
Divisor Sum (σ) 20,177,162
Proper Divisor Sum 1
Digit Sum / Digital Root 25 (Root: 7)
Adjacent Primes #20177149 ← → #20177177

Radix Representation

Decimal 20177161
Binary 1001100111110000100001001 (25 bits)
Octal 0o114760411
Hexadecimal 0x133E109

Divisor Catalog (2)

Collatz Trajectory (146 steps to reach 1)

Iterative sequence n → n/2 (if even) or 3n+1 (if odd):

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