λ
Ratio Atlas
821
821
Deficient Odd Prime

Prime Factor Structure

Factorization String 821
Distinct Prime Factors 1
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 2
Divisor Sum (σ) 822
Proper Divisor Sum 1
Digit Sum / Digital Root 11 (Root: 2)
Adjacent Primes #811 ← → #823

Radix Representation

Decimal 821
Binary 1100110101 (10 bits)
Octal 0o1465
Hexadecimal 0x335

Divisor Catalog (2)

1 821

Collatz Trajectory (28 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 #820 Browse Full Index Next Integer #822 →