3 × 5 × 257 × 331

Prime Factor Structure

Factorization String 3 × 5 × 257 × 331

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 2,055,744

Proper Divisor Sum 779,739

Digit Sum / Digital Root 21 (Root: 3)

Adjacent Primes #1276001 ← → #1276007

1 3 5 15 257 331 771 993 1,285 1,655 3,855 4,965 85,067 255,201 425,335 1,276,005

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

1,276,005 3,828,016 1,914,008 957,004 478,502 239,251 717,754 358,877 1,076,632 538,316 269,158 134,579 403,738 201,869 605,608 302,804 151,402 75,701 227,104 113,552 56,776 28,388 14,194 7,097 21,292 10,646 5,323 15,970 7,985 23,956 11,978 5,989 17,968 8,984 4,492 2,246 1,123 3,370 1,685 5,056 2,528 1,264 632 316 158 79 238 119 358 179 538 269 808 404 202 101 304 152 76 38

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