13 × 31 × 521

Prime Factor Structure

Factorization String 13 × 31 × 521

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 8

Divisor Sum (σ) 233,856

Proper Divisor Sum 23,893

Digit Sum / Digital Root 29 (Root: 2)

Adjacent Primes #209959 ← → #209971

1 13 31 403 521 6,773 16,151 209,963

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

209,963 629,890 314,945 944,836 472,418 236,209 708,628 354,314 177,157 531,472 265,736 132,868 66,434 33,217 99,652 49,826 24,913 74,740 37,370 18,685 56,056 28,028 14,014 7,007 21,022 10,511 31,534 15,767 47,302 23,651 70,954 35,477 106,432 53,216 26,608 13,304 6,652 3,326 1,663 4,990 2,495 7,486 3,743 11,230 5,615 16,846 8,423 25,270 12,635 37,906 18,953 56,860 28,430 14,215 42,646 21,323 63,970 31,985 95,956 47,978

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