31 × 21397

Prime Factor Structure

Factorization String 31 × 21397

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 684,736

Proper Divisor Sum 21,429

Digit Sum / Digital Root 25 (Root: 7)

Adjacent Primes #663301 ← → #663319

1 31 21,397 663,307

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

663,307 1,989,922 994,961 2,984,884 1,492,442 746,221 2,238,664 1,119,332 559,666 279,833 839,500 419,750 209,875 629,626 314,813 944,440 472,220 236,110 118,055 354,166 177,083 531,250 265,625 796,876 398,438 199,219 597,658 298,829 896,488 448,244 224,122 112,061 336,184 168,092 84,046 42,023 126,070 63,035 189,106 94,553 283,660 141,830 70,915 212,746 106,373 319,120 159,560 79,780 39,890 19,945 59,836 29,918 14,959 44,878 22,439 67,318 33,659 100,978 50,489 151,468

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