λ
Sequence Observatory

66,254

2 × 157 × 211
Deficient Even Composite

Starting at 66,254, the Collatz iteration reaches 1 after 99 steps. The first transition is 33127; the starting value is even with 8 positive divisors.

Prime Factor Structure

Factorization String 2 × 157 × 211
Distinct Prime Factors 3
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 8
Divisor Sum (σ) 100,488
Proper Divisor Sum 34,234
Digit Sum / Digital Root 23 (Root: 5)
Adjacent Primes #66239 ← → #66271

Radix Representation

Decimal 66254
Binary 10000001011001110 (17 bits)
Octal 0o201316
Hexadecimal 0x102CE

Divisor Catalog (8)

1 2 157 211 314 422 33,127 66,254

Collatz Trajectory (99 steps to reach 1)

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

66,254 33,127 99,382 49,691 149,074 74,537 223,612 111,806 55,903 167,710 83,855 251,566 125,783 377,350 188,675 566,026 283,013 849,040 424,520 212,260 106,130 53,065 159,196 79,598 39,799 119,398 59,699 179,098 89,549 268,648 134,324 67,162 33,581 100,744 50,372 25,186 12,593 37,780 18,890 9,445 28,336 14,168 7,084 3,542 1,771 5,314 2,657 7,972 3,986 1,993 5,980 2,990 1,495 4,486 2,243 6,730 3,365 10,096 5,048 2,524

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