5 × 31 × 139

Prime Factor Structure

Factorization String 5 × 31 × 139

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 8

Divisor Sum (σ) 26,880

Proper Divisor Sum 5,335

Digit Sum / Digital Root 17 (Root: 8)

Adjacent Primes #21529 ← → #21557

1 5 31 139 155 695 4,309 21,545

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

21,545 64,636 32,318 16,159 48,478 24,239 72,718 36,359 109,078 54,539 163,618 81,809 245,428 122,714 61,357 184,072 92,036 46,018 23,009 69,028 34,514 17,257 51,772 25,886 12,943 38,830 19,415 58,246 29,123 87,370 43,685 131,056 65,528 32,764 16,382 8,191 24,574 12,287 36,862 18,431 55,294 27,647 82,942 41,471 124,414 62,207 186,622 93,311 279,934 139,967 419,902 209,951 629,854 314,927 944,782 472,391 1,417,174 708,587 2,125,762 1,062,881

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