λ
Sequence Observatory

9,781,966

2 × 4890983
Deficient Even Composite

Starting at 9,781,966, the Collatz iteration reaches 1 after 176 steps. The first transition is 4890983; the starting value is even with 4 positive divisors.

Prime Factor Structure

Factorization String 2 × 4890983
Distinct Prime Factors 2
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 4
Divisor Sum (σ) 14,672,952
Proper Divisor Sum 4,890,986
Digit Sum / Digital Root 46 (Root: 1)
Adjacent Primes #9781963 ← → #9781991

Radix Representation

Decimal 9781966
Binary 100101010100001011001110 (24 bits)
Octal 0o45241316
Hexadecimal 0x9542CE

Divisor Catalog (4)

1 2 4,890,983 9,781,966

Collatz Trajectory (176 steps to reach 1)

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

9,781,966 4,890,983 14,672,950 7,336,475 22,009,426 11,004,713 33,014,140 16,507,070 8,253,535 24,760,606 12,380,303 37,140,910 18,570,455 55,711,366 27,855,683 83,567,050 41,783,525 125,350,576 62,675,288 31,337,644 15,668,822 7,834,411 23,503,234 11,751,617 35,254,852 17,627,426 8,813,713 26,441,140 13,220,570 6,610,285 19,830,856 9,915,428 4,957,714 2,478,857 7,436,572 3,718,286 1,859,143 5,577,430 2,788,715 8,366,146 4,183,073 12,549,220 6,274,610 3,137,305 9,411,916 4,705,958 2,352,979 7,058,938 3,529,469 10,588,408 5,294,204 2,647,102 1,323,551 3,970,654 1,985,327 5,955,982 2,977,991 8,933,974 4,466,987 13,400,962

More profiles

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