λ
Ratio Atlas
138,689
331 × 419
Deficient Odd Composite

Prime Factor Structure

Factorization String 331 × 419
Distinct Prime Factors 2
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 4
Divisor Sum (σ) 139,440
Proper Divisor Sum 751
Digit Sum / Digital Root 35 (Root: 8)
Adjacent Primes #138683 ← → #138727

Radix Representation

Decimal 138689
Binary 100001110111000001 (18 bits)
Octal 0o416701
Hexadecimal 0x21DC1

Divisor Catalog (4)

Collatz Trajectory (131 steps to reach 1)

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

Active Feeder Network

Other feeder batches with open delivery windows. Each feeder keeps its own target batch.

← Previous Integer #138,688 Browse Full Index Next Integer #138,690 →