643 × 1009

Prime Factor Structure

Factorization String 643 × 1009

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 650,440

Proper Divisor Sum 1,653

Digit Sum / Digital Root 40 (Root: 4)

Adjacent Primes #648779 ← → #648803

1 643 1,009 648,787

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

648,787 1,946,362 973,181 2,919,544 1,459,772 729,886 364,943 1,094,830 547,415 1,642,246 821,123 2,463,370 1,231,685 3,695,056 1,847,528 923,764 461,882 230,941 692,824 346,412 173,206 86,603 259,810 129,905 389,716 194,858 97,429 292,288 146,144 73,072 36,536 18,268 9,134 4,567 13,702 6,851 20,554 10,277 30,832 15,416 7,708 3,854 1,927 5,782 2,891 8,674 4,337 13,012 6,506 3,253 9,760 4,880 2,440 1,220 610 305 916 458 229 688

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