13 × 17 × 131 × 257

Prime Factor Structure

Factorization String 13 × 17 × 131 × 257

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 8,582,112

Proper Divisor Sum 1,141,705

Digit Sum / Digital Root 26 (Root: 8)

Adjacent Primes #7440397 ← → #7440409

1 13 17 131 221 257 1,703 2,227 3,341 4,369 28,951 33,667 56,797 437,671 572,339 7,440,407

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

7,440,407 22,321,222 11,160,611 33,481,834 16,740,917 50,222,752 25,111,376 12,555,688 6,277,844 3,138,922 1,569,461 4,708,384 2,354,192 1,177,096 588,548 294,274 147,137 441,412 220,706 110,353 331,060 165,530 82,765 248,296 124,148 62,074 31,037 93,112 46,556 23,278 11,639 34,918 17,459 52,378 26,189 78,568 39,284 19,642 9,821 29,464 14,732 7,366 3,683 11,050 5,525 16,576 8,288 4,144 2,072 1,036 518 259 778 389 1,168 584 292 146 73 220

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