257 × 2689

Prime Factor Structure

Factorization String 257 × 2689

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 694,020

Proper Divisor Sum 2,947

Digit Sum / Digital Root 26 (Root: 8)

Adjacent Primes #691063 ← → #691079

1 257 2,689 691,073

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

691,073 2,073,220 1,036,610 518,305 1,554,916 777,458 388,729 1,166,188 583,094 291,547 874,642 437,321 1,311,964 655,982 327,991 983,974 491,987 1,475,962 737,981 2,213,944 1,106,972 553,486 276,743 830,230 415,115 1,245,346 622,673 1,868,020 934,010 467,005 1,401,016 700,508 350,254 175,127 525,382 262,691 788,074 394,037 1,182,112 591,056 295,528 147,764 73,882 36,941 110,824 55,412 27,706 13,853 41,560 20,780 10,390 5,195 15,586 7,793 23,380 11,690 5,845 17,536 8,768 4,384

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