2 × 321661

Prime Factor Structure

Factorization String 2 × 321661

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 964,986

Proper Divisor Sum 321,664

Digit Sum / Digital Root 20 (Root: 2)

Adjacent Primes #643303 ← → #643369

1 2 321,661 643,322

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

643,322 321,661 964,984 482,492 241,246 120,623 361,870 180,935 542,806 271,403 814,210 407,105 1,221,316 610,658 305,329 915,988 457,994 228,997 686,992 343,496 171,748 85,874 42,937 128,812 64,406 32,203 96,610 48,305 144,916 72,458 36,229 108,688 54,344 27,172 13,586 6,793 20,380 10,190 5,095 15,286 7,643 22,930 11,465 34,396 17,198 8,599 25,798 12,899 38,698 19,349 58,048 29,024 14,512 7,256 3,628 1,814 907 2,722 1,361 4,084

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