λ
Sigma Notebook

2,154,371

163 × 13217
Deficient Odd Composite

2,154,371 is odd and not a perfect square. Its factorization is 163 × 13217 and its 4 divisors sum to 2,167,752.

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Prime Factor Structure

Factorization String 163 × 13217
Distinct Prime Factors 2
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 4
Divisor Sum (σ) 2,167,752
Proper Divisor Sum 13,381
Digit Sum / Digital Root 23 (Root: 5)
Adjacent Primes #2154331 ← → #2154389

Radix Representation

Decimal 2154371
Binary 1000001101111110000011 (22 bits)
Octal 0o10157603
Hexadecimal 0x20DF83

Divisor Catalog (4)

1 163 13,217 2,154,371

Collatz Trajectory (117 steps to reach 1)

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

Showing the first 5 trajectory entries; the stopping-time total above is unchanged.

2,154,371 6,463,114 3,231,557 9,694,672 4,847,336

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