7 × 13 × 31 × 227

Prime Factor Structure

Factorization String 7 × 13 × 31 × 227

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 817,152

Proper Divisor Sum 176,785

Digit Sum / Digital Root 26 (Root: 8)

Adjacent Primes #640363 ← → #640369

1 7 13 31 91 217 227 403 1,589 2,821 2,951 7,037 20,657 49,259 91,481 640,367

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

640,367 1,921,102 960,551 2,881,654 1,440,827 4,322,482 2,161,241 6,483,724 3,241,862 1,620,931 4,862,794 2,431,397 7,294,192 3,647,096 1,823,548 911,774 455,887 1,367,662 683,831 2,051,494 1,025,747 3,077,242 1,538,621 4,615,864 2,307,932 1,153,966 576,983 1,730,950 865,475 2,596,426 1,298,213 3,894,640 1,947,320 973,660 486,830 243,415 730,246 365,123 1,095,370 547,685 1,643,056 821,528 410,764 205,382 102,691 308,074 154,037 462,112 231,056 115,528 57,764 28,882 14,441 43,324 21,662 10,831 32,494 16,247 48,742 24,371

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