13 × 157 × 317

Prime Factor Structure

Factorization String 13 × 157 × 317

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 8

Divisor Sum (σ) 703,416

Proper Divisor Sum 56,419

Digit Sum / Digital Root 41 (Root: 5)

Adjacent Primes #646993 ← → #647011

1 13 157 317 2,041 4,121 49,769 646,997

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

646,997 1,940,992 970,496 485,248 242,624 121,312 60,656 30,328 15,164 7,582 3,791 11,374 5,687 17,062 8,531 25,594 12,797 38,392 19,196 9,598 4,799 14,398 7,199 21,598 10,799 32,398 16,199 48,598 24,299 72,898 36,449 109,348 54,674 27,337 82,012 41,006 20,503 61,510 30,755 92,266 46,133 138,400 69,200 34,600 17,300 8,650 4,325 12,976 6,488 3,244 1,622 811 2,434 1,217 3,652 1,826 913 2,740 1,370 685

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