13 × 20921

Prime Factor Structure

Factorization String 13 × 20921

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 292,908

Proper Divisor Sum 20,935

Digit Sum / Digital Root 29 (Root: 2)

Adjacent Primes #271969 ← → #271981

1 13 20,921 271,973

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

271,973 815,920 407,960 203,980 101,990 50,995 152,986 76,493 229,480 114,740 57,370 28,685 86,056 43,028 21,514 10,757 32,272 16,136 8,068 4,034 2,017 6,052 3,026 1,513 4,540 2,270 1,135 3,406 1,703 5,110 2,555 7,666 3,833 11,500 5,750 2,875 8,626 4,313 12,940 6,470 3,235 9,706 4,853 14,560 7,280 3,640 1,820 910 455 1,366 683 2,050 1,025 3,076 1,538 769 2,308 1,154 577 1,732

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