2² × 13 × 12791

Prime Factor Structure

Factorization String 2^2 × 13 × 12791

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 12

Divisor Sum (σ) 1,253,616

Proper Divisor Sum 588,484

Digit Sum / Digital Root 23 (Root: 5)

Adjacent Primes #665131 ← → #665141

1 2 4 13 26 52 12,791 25,582 51,164 166,283 332,566 665,132

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

665,132 332,566 166,283 498,850 249,425 748,276 374,138 187,069 561,208 280,604 140,302 70,151 210,454 105,227 315,682 157,841 473,524 236,762 118,381 355,144 177,572 88,786 44,393 133,180 66,590 33,295 99,886 49,943 149,830 74,915 224,746 112,373 337,120 168,560 84,280 42,140 21,070 10,535 31,606 15,803 47,410 23,705 71,116 35,558 17,779 53,338 26,669 80,008 40,004 20,002 10,001 30,004 15,002 7,501 22,504 11,252 5,626 2,813 8,440 4,220

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