3 × 5 × 139 × 257

Prime Factor Structure

Factorization String 3 × 5 × 139 × 257

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 866,880

Proper Divisor Sum 331,035

Digit Sum / Digital Root 30 (Root: 3)

Adjacent Primes #535811 ← → #535849

1 3 5 15 139 257 417 695 771 1,285 2,085 3,855 35,723 107,169 178,615 535,845

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

535,845 1,607,536 803,768 401,884 200,942 100,471 301,414 150,707 452,122 226,061 678,184 339,092 169,546 84,773 254,320 127,160 63,580 31,790 15,895 47,686 23,843 71,530 35,765 107,296 53,648 26,824 13,412 6,706 3,353 10,060 5,030 2,515 7,546 3,773 11,320 5,660 2,830 1,415 4,246 2,123 6,370 3,185 9,556 4,778 2,389 7,168 3,584 1,792 896 448 224 112 56 28 14 7 22 11 34 17

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