631 × 641

Prime Factor Structure

Factorization String 631 × 641

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 405,744

Proper Divisor Sum 1,273

Digit Sum / Digital Root 20 (Root: 2)

Adjacent Primes #404461 ← → #404483

1 631 641 404,471

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

404,471 1,213,414 606,707 1,820,122 910,061 2,730,184 1,365,092 682,546 341,273 1,023,820 511,910 255,955 767,866 383,933 1,151,800 575,900 287,950 143,975 431,926 215,963 647,890 323,945 971,836 485,918 242,959 728,878 364,439 1,093,318 546,659 1,639,978 819,989 2,459,968 1,229,984 614,992 307,496 153,748 76,874 38,437 115,312 57,656 28,828 14,414 7,207 21,622 10,811 32,434 16,217 48,652 24,326 12,163 36,490 18,245 54,736 27,368 13,684 6,842 3,421 10,264 5,132 2,566

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