λ
Modular Archive
1,891
31 × 61
Deficient Odd Composite

Prime Factor Structure

Factorization String 31 × 61
Distinct Prime Factors 2
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 4
Divisor Sum (σ) 1,984
Proper Divisor Sum 93
Digit Sum / Digital Root 19 (Root: 1)
Adjacent Primes #1889 ← → #1901

Radix Representation

Decimal 1891
Binary 11101100011 (11 bits)
Octal 0o3543
Hexadecimal 0x763

Divisor Catalog (4)

Collatz Trajectory (37 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 #1,890 Browse Full Index Next Integer #1,892 →