521 × 1559

Prime Factor Structure

Factorization String 521 × 1559

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 814,320

Proper Divisor Sum 2,081

Digit Sum / Digital Root 25 (Root: 7)

Adjacent Primes #812233 ← → #812249

1 521 1,559 812,239

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

812,239 2,436,718 1,218,359 3,655,078 1,827,539 5,482,618 2,741,309 8,223,928 4,111,964 2,055,982 1,027,991 3,083,974 1,541,987 4,625,962 2,312,981 6,938,944 3,469,472 1,734,736 867,368 433,684 216,842 108,421 325,264 162,632 81,316 40,658 20,329 60,988 30,494 15,247 45,742 22,871 68,614 34,307 102,922 51,461 154,384 77,192 38,596 19,298 9,649 28,948 14,474 7,237 21,712 10,856 5,428 2,714 1,357 4,072 2,036 1,018 509 1,528 764 382 191 574 287 862

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