2² × 5 × 131 × 199

Prime Factor Structure

Factorization String 2^2 × 5 × 131 × 199

Distinct Prime Factors 4

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 24

Divisor Sum (σ) 1,108,800

Proper Divisor Sum 587,420

Digit Sum / Digital Root 19 (Root: 1)

Adjacent Primes #521377 ← → #521393

1 2 4 5 10 20 131 199 262 398 524 655 796 995 1,310 1,990 2,620 3,980 26,069 52,138 104,276 130,345 260,690 521,380

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

521,380 260,690 130,345 391,036 195,518 97,759 293,278 146,639 439,918 219,959 659,878 329,939 989,818 494,909 1,484,728 742,364 371,182 185,591 556,774 278,387 835,162 417,581 1,252,744 626,372 313,186 156,593 469,780 234,890 117,445 352,336 176,168 88,084 44,042 22,021 66,064 33,032 16,516 8,258 4,129 12,388 6,194 3,097 9,292 4,646 2,323 6,970 3,485 10,456 5,228 2,614 1,307 3,922 1,961 5,884 2,942 1,471 4,414 2,207 6,622 3,311

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