131 × 4889

Prime Factor Structure

Factorization String 131 × 4889

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 645,480

Proper Divisor Sum 5,021

Digit Sum / Digital Root 28 (Root: 1)

Adjacent Primes #640457 ← → #640463

1 131 4,889 640,459

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

640,459 1,921,378 960,689 2,882,068 1,441,034 720,517 2,161,552 1,080,776 540,388 270,194 135,097 405,292 202,646 101,323 303,970 151,985 455,956 227,978 113,989 341,968 170,984 85,492 42,746 21,373 64,120 32,060 16,030 8,015 24,046 12,023 36,070 18,035 54,106 27,053 81,160 40,580 20,290 10,145 30,436 15,218 7,609 22,828 11,414 5,707 17,122 8,561 25,684 12,842 6,421 19,264 9,632 4,816 2,408 1,204 602 301 904 452 226 113

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