5 × 128657

Prime Factor Structure

Factorization String 5 × 128657

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 771,948

Proper Divisor Sum 128,663

Digit Sum / Digital Root 28 (Root: 1)

Adjacent Primes #643273 ← → #643301

1 5 128,657 643,285

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

643,285 1,929,856 964,928 482,464 241,232 120,616 60,308 30,154 15,077 45,232 22,616 11,308 5,654 2,827 8,482 4,241 12,724 6,362 3,181 9,544 4,772 2,386 1,193 3,580 1,790 895 2,686 1,343 4,030 2,015 6,046 3,023 9,070 4,535 13,606 6,803 20,410 10,205 30,616 15,308 7,654 3,827 11,482 5,741 17,224 8,612 4,306 2,153 6,460 3,230 1,615 4,846 2,423 7,270 3,635 10,906 5,453 16,360 8,180 4,090

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