λ
Ratio Atlas

20,177,149

20177149
Deficient Odd Prime

20,177,149 factors as 20177149. Its 2 positive divisors give a proper-divisor sum of 1, so this integer is deficient. The Collatz stopping time is 252 steps.

Prime Factor Structure

Factorization String 20177149
Distinct Prime Factors 1
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 2
Divisor Sum (σ) 20,177,150
Proper Divisor Sum 1
Digit Sum / Digital Root 31 (Root: 4)
Adjacent Primes #20177123 ← → #20177161

Radix Representation

Decimal 20177149
Binary 1001100111110000011111101 (25 bits)
Octal 0o114760375
Hexadecimal 0x133E0FD

Divisor Catalog (2)

Collatz Trajectory (252 steps to reach 1)

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

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