1,321,981

1321981

1,321,981 factors as 1321981. Its 2 positive divisors give a proper-divisor sum of 1, so this integer is deficient. The Collatz stopping time is 98 steps.

Prime Factor Structure

Factorization String 1321981

Distinct Prime Factors 1

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 2

Divisor Sum (σ) 1,321,982

Proper Divisor Sum 1

Digit Sum / Digital Root 25 (Root: 7)

Adjacent Primes #1321961 ← → #1321997

Radix Representation

Decimal	1321981
Binary	101000010101111111101 (21 bits)
Octal	0o5025775
Hexadecimal	0x142BFD

Divisor Catalog (2)

1 1,321,981

Collatz Trajectory (98 steps to reach 1)

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

1,321,981 3,965,944 1,982,972 991,486 495,743 1,487,230 743,615 2,230,846 1,115,423 3,346,270 1,673,135 5,019,406 2,509,703 7,529,110 3,764,555 11,293,666 5,646,833 16,940,500 8,470,250 4,235,125 12,705,376 6,352,688 3,176,344 1,588,172 794,086 397,043 1,191,130 595,565 1,786,696 893,348 446,674 223,337 670,012 335,006 167,503 502,510 251,255 753,766 376,883 1,130,650 565,325 1,695,976 847,988 423,994 211,997 635,992 317,996 158,998 79,499 238,498 119,249 357,748 178,874 89,437 268,312 134,156 67,078 33,539 100,618 50,309

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