11 × 23 × 2531

Prime Factor Structure

Factorization String 11 × 23 × 2531

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 8

Divisor Sum (σ) 729,216

Proper Divisor Sum 88,873

Digit Sum / Digital Root 20 (Root: 2)

Adjacent Primes #640333 ← → #640363

1 11 23 253 2,531 27,841 58,213 640,343

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

640,343 1,921,030 960,515 2,881,546 1,440,773 4,322,320 2,161,160 1,080,580 540,290 270,145 810,436 405,218 202,609 607,828 303,914 151,957 455,872 227,936 113,968 56,984 28,492 14,246 7,123 21,370 10,685 32,056 16,028 8,014 4,007 12,022 6,011 18,034 9,017 27,052 13,526 6,763 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.